Special CAMP Seminar
339 Davey and https://psu.zoom.us/j/96720940863?pwd=a3FhYTdUM0dBdGRXZ3NWUzIrTmpvUT09 - Password: 804956
2023-06-05
Prof. Zhida Song from Peking University will give a special CAMP seminar talk entitled: Kondo Phase in Twisted Bilayer Graphene - A Unified Theory for Distinct Experiments. Abstract: A number of interesting physics phenomena have been discovered in magic-angle twisted bilayer graphene(MATBG), such as superconductivity, correlated gapped and gapless phases, etc. The gapped phases are believed to be symmetry-breaking states described by mean-field theories. Gapless phases, however, exhibit exotic phenomena beyond naive mean-field descriptions. Such phenomena include (i) zero-energy peaks in spectral density at low temperatures, (ii) a cascade of transitions as that of a quantum dot at higher temperatures, (iii) the Pomeranchuk effect where local moment develops upon heating, (iv) resistance peaks in gapless phases at certain integer fillings, etc. These phenomena have never been connected or explained on a microscopic level by any prior theory. In this work, we point out that all these phenomena result from a simple unified mechanism- the Kondo effect. We applied systematic analytical and numerical renormalization group analyses to a singleimpurity version of the recently proposed topological heavy fermion (THF) model of MATBG. We find that the Fermi liquid ground state exhibiting (i) zero-energy peaks is stabilized by the Kondo screening effect. A higher temperature will drive the system into a local moment phase that obeys Curie’s law and has higher entropy. This explains the (ii) transition cascade, (iii) the Pomeranchuk effect, and (iv) resistance peaks. Remarkably, using realistic parameters given by the previous THF model work, the computed spectral densities, entropies, and spin susceptibilities are quantitatively comparable to experiments. Furthermore, we predict that the ground state in a wide range of fractional fillings is the heavy Fermi liquid, and compute its dispersion, quasi-particle weight, and energy surfaces that could be used to verify our theory if compared to experiments in the future studies. We conjecture that the heavy Fermi liquid is the parent state of the observed unconventional superconductivity. It is also possible that the observed “strange metal” behavior could be connected to the competition between RKKY interaction and Kondo screening.
| 10:15 | Zhi-Da Song | Kondo Phase in Twisted Bilayer Graphene - A Unified Theory for Distinct Experiments. |
IGC-All Meeting
538 Davey Lab
2023-04-24
A debrief of the External Advisory Board's notes for the IGC. All are encouraged to attend.
| 14:00 | Sarah Shandera | EAB Debrief |
Special Condensed Atomic Molecular Physics (CAMP) Seminar
318 Osmond
2023-04-21
Yihang Zeng - Interplay between Correlation and Topology in TMD Moiré Materials
| 10:00 | Yihang Zeng | Interplay between Correlation and Topology in TMD Moiré Materials |
Primordial Universe and Gravity (PUG) Seminar
321 Whitmore Lab
2023-04-21
Zhenyuan Wang - The Renormalization in Cosmological Perturbation Theory
| 14:00 | Zhenyuan Wang | The Renormalization in Cosmological Perturbation Theory |
Physics Colloquium - Eklund Award winners Ish Gupta and Marius Jürgensen
101 Osmond and https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2023-04-20
The 2023 Peter Clay Eklund Lecture Awards for Scientific Communication
| 15:45 | Ish Gupta and Marius Jürgensen | 2023 Peter Clay Eklund Lecture Awards for Scientific Communication |
Primordial Universe and Gravity (PUG) Seminar
321 Whitmore Lab
2023-04-14
Shio Sakon, topic to be announced
| 14:30 | Shio Sakon | Topic TBA |
Gravity, Astroparticle and Particle Physics (GAPP) Seminar
320 Whitmore Lab
2023-04-14
Anuradha Gupta, Extracting Astrophysics from Spin Precession in Binary Black Holes
| 11:00 | Anuradha Gupta | Extracting Astrophysics from Spin Precession in Binary Black Holes |
Physics Colloquium
101 Osmond
2023-04-13
Steven Prohira, Ultrahigh Energy Neutrino Detection...with Radar?
| 15:45 | Steven Prohira | Ultrahigh Energy Neutrino Detection...with Radar? |
Condensed Atomic Molecular Physics (CAMP) Seminar
339 Davey Lab
2023-04-10
Xifan Wu, Unravelling the Mystery of Water and Aqueous Solutions by Theories of both Electronic Ground State and Excitation
| 15:45 | Xifan Wu | Unravelling the Mystery of Water and Aqueous Solutions by Theories of both Electronic Ground State and Excitation |
Center for Fundamental Theory Meeting
538 Davey Lab
2023-04-10
A discussion of the connections between IGC centers and the new directions the Center could go in.
| 14:00 | Martin Bojowald and Jacob Bourjaily | The CFT's new directions? |
Friedman Lecture - John Mather
100 Thomas
2023-04-08
On Saturday April 8, the Astro Department is hosting a very unusual outreach visitor: Dr. John C. Mather, chief scientist of the James Webb Space Telescope and winner of the 2006 Nobel Prize in Physics for cosmology. Dr. Mather will be our 2023 Friedman Lecturer in Astronomy speaking to the public and University communities on JWST. This is expected to be the Department's largest outreach event in years. Breakfast will be held at 8:45-9:45AM in 114 McAllister. If you'd like to join for breakfast, please sign in here: https://docs.google.com/spreadsheets/d/1IzpPAspJ0KgsKI_lPwzZk5_e2fXQWDTg05JVMmNGQpw/edit#gid=0 A few small groups of researchers or students can meet with Dr. Mather from 10-12:00PM in 432 Davey. If you are interested, please send an email by Monday, the 27th, with your attendees to Drs. Feigelson and McEntaffer. Dr. Mather will give the public 2023 Friedman Lecture in Astronomy in 100 Thomas from 2:30-3:30pm. Please attend with friends and families.
| 14:30 | John Mather | Friedman Lecture |
International Loop Quantum Gravity Seminar
https://lsu.zoom.us/j/97017759448?pwd=WG14eG9XdHJqVlZncHJCa1c0OFc3dz09
2023-04-04
LQC of Black Holes in Loop Quantum Gravity, Beatriz Elizaga, LSU
| 10:00 | Beatriz Elizaga | LQC of Black Holes in Loop Quantum Gravity |
Physics Colloquium - Zolton Fodor
339 Davey and https://psu.us8.list-manage.com/track/click?u=4226e3ef532a8590ae62886fb&id=beab6e7bef&e=9148850abf
2023-04-03
The Anomalous Magnetic Moment of the Muon
| 15:45 | Zolton Fodor | The Anomalous Magnetic Moment of the Muon |
CMA Meeting
538 Davey Lab
2023-04-03
News updates - We will have coffee and snacks, and everyone is welcome to come
| 14:00 | Miguel Mostafa | News updates |
Primordial Universe and Gravity (PUG) Seminar
321 Whitmore Lab
2023-03-31
Jackson henry - Title and Abstract to be circulated later this week
| 14:30 | Jackson Henry | Title TBA |
Physics Colloquium - Zvi Bern
101 Osmond and https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2023-03-30
Title: From Quantum Scattering Amplitudes to Gravitational Waves Abstract: The remarkable detection of gravitational waves by the LIGO/Virgo collaboration has opened a new window into the cosmos. In this colloquium we explain how particle theorists can help out with calculations directly relevant for gravitational-wave emission from compact astrophysical objects. The past decade has seen enormous advances in our ability to compute quantum scattering amplitudes making seemingly impossible calculations tractable. These advances include ideas such as the duality between color and kinematics, double-copy relations, generalized unitarity, and improved integration methods. The starting point in this approach is that gravity is transmitted by a massless spin 2 particle. After introducing these concepts, we explain how these ideas are transferred to produce new state-of-the-art calculations for the astrophysical binary black hole inspiral problem.
| 15:45 | Zvi Bern | From Quantum Scattering Amplitudes to Gravitational Waves |
Center for Theoretical and Observational Cosmology Meeting
538 Davey Lab
2023-03-27
Jahmour Givans, a visiting postdoc and FFPS fellow at Princeton, will give a brief, informal presentation on "Modeling the Lyman-alpha forest autocorrelation and its cross-correlation with dark matter halos". Coffee and snacks will be provided as usual.
| 14:00 | Jahmour Givans | Modeling the Lyman-alpha forest autocorrelation and its cross-correlation with dark matter halos |
Special Condensed Atomic Molecular Physics (CAMP) Seminar - Xiaoliang Qi, Stanford
339 Davey Lab
2023-03-27
Title: Spacetime Mutual Information Abstract: Most quantum information measures are defined for quantum states. For example, mutual information measures the correlation between two subsystems in a quantum state. It is natural to ask whether correlation in spacetime can be characterized by some generalization of mutual information. In this work, we propose a space-time generalization of mutual information. The key idea is to consider a general "quantum experiment" that measures the correlation between two space-time regions, and use the setup of hypothesis testing. We discuss various properties of the spacetime mutual information, including how it provides an upper bound for all connected correlation functions, which is a direct generalization of the similar property of ordinary mutual information.
| 10:00 | Xiaoliang Qi | Spacetime Mutual Information |
Condensed Atomic Molecular Physics (CAMP) Seminar - Ilya Sochnikov
339 Davey Lab
2023-03-27
Title: Tunable Magnetic Domains and Walls in a Noncentrosymmetric Ferromagnetic Weyl Semimetal Abstract: In Weyl semimetals, chirality is a new degree of freedom that has great potential for fundamental physics as well as for the development of new devices for storing and processing information. The combination of the topology of the Weyl fermions with magnetism is particularly attractive: magnetic Weyl materials are predicted to exhibit electromagnetic properties transformed by emergent gauge axial fields. To advance this field of research, it is essential to understand the detailed magnetic domains physics of these materials. In this study, we investigated spontaneous magnetization and magnetic susceptibility of a non-centrosymmetric ferromagnetic (FM) Weyl semimetal: CeAlSi
| 15:45 | Ilya Sochnikov | Tunable Magnetic Domains and walls in a Noncentrosymmetric Ferromagnetic Weyl Semimetal |
Primordial Universe and Gravity (PUG) Seminar
321 Whitmore
2023-03-24
Michael Plesser - Amplitudes beyond QFT: Correcting Coulomb and Newton with On-Shell Methods
| 14:00 | Michael Plesser | Amplitudes beyond QFT: Correcting Coulomb and Newton with On-Shell Methods |
Physics Colloquium - Visualizing Many Body Quantum States in Magical Flat Bands
101 Osmond and Zoom: https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2023-03-23
Ali Yazdani, University of Princeton
| 15:45 | Ali Yazdani | Visualizing Many Body Quantum States in Magical Flat Bands |
Astro Colloquium - Data At Your Fingertips: Using Citizen Science in Undergraduate Astronomy Classrooms
538 Davey Lab
2023-03-22
Molly Simon - With big data on the rise, research teams across a multitude of disciplines are left with more data than they have time to analyze independently. Citizen science is an invaluable tool that involves crowdsourcing aspects of the data analysis process, enabling these research teams to solve problems involving large quantities of data more efficiently while simultaneously taking advantage of the inherently human talent for pattern recognition and anomaly detection.
| 15:45 | Molly Simon | Data At Your Fingertips: Using Citizen Science in Undergraduate Astronomy Classrooms |
Condensed Atomic Molecular Physics (CAMP) Seminar - Quantum Phenomena in the Landau Levels of Atomically-Thin Transition Metal Dicalcogenides
Zoom: https://psu.zoom.us/j/96178311702?pwd=bWNHRXE5QUdkbTVEY1F3dFlhR3JvZz09
2023-03-20
Landau levels offer a neat model system to study emergent quantum phases, owing to the dominating Coulomb interactions and tunable orbital wavefunctions. In atomically-thin transition metal dicalcogenide, the well-resolved and -controlled spin, valley and layer degree of freedom further enriches the physics that can be explored. In this talk, I’ll discuss a few examples in WSe2: first, a bilayer WSe2 allows selective carrier population of the individual layers; when the filling factor of the two layers is an integer number, it manifests as a natural platform for interlayer exciton condensate. Second, a large imbalance in the population of two (pseudo)spins gives rise to spin-dependent transport in partially filled Landau levels - the spin-minority carriers are much less mobile than the spin-majority carriers. We explain such behavior using a polaron picture.
| 15:45 | Qianhui Shi | Quantum Phenomena in the Landau Levels of Atomically-thin Transition Metal Dicalcogenides |
IGC-all Meeting
538 Davey Lab
2023-03-20
Details about upcoming IGC events, including the Neighborhood Workshop, Art Showcase and External Advisory Board Meetings will be given. Coffee and snacks will be provided.
| 14:00 | Sarah Shandera | IGC-all Meeting |
Primordial Universe and Gravity (PUG) Seminar
321 Whitmore
2023-03-17
Rahul Kashyap, Relativistic Rotating Stars
| 14:00 | Rahul Kashyap | Relativistic Rotating Stars |
Gravity, Astroparticle and Particle Physics (GAPP) Seminar
320 Whitmore Lab
2023-03-17
I will explore the possibility that the couplings describing the strengths of the Standard Model gauge forces take different values at very early times. As I will show, such a scenario is typically consistent with current observations if the variation happens early enough, and can cause us to radically rethink processes such as dark matter production or the generation of the matter-anti-matter asymmetry.
| 11:00 | Tim Tait | Dynamical Couplings in the Early Universe |
Physics Colloquium
101 Osmond and https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2023-03-16
I will discuss the need to extend the Standard Model of particle physics in order to describe the dark matter, a mysterious substance whose existence can be inferred from cosmological measurements, but whose fundamental nature remains unknown. I’ll discuss how a broad strategy of searching for dark matter using techniques from particle physics and astronomy maximize our chances of successfully discovering its identity, and what this could mean for future research in particle physics.
| 15:45 | Tim Tait | Casting a Wide Net for Dark Matter |
Astro Colloquium
538 Davey Lab
2023-03-15
Data is one of the fundamental quantities on which progress in astronomy is predicated. Yet there is often a disproportionate emphasis on immediate science results over the development of robust methods to process and even model the underlying data. In this talk I will present a case study demonstrating the benefits of investing in modern software development for data modeling – the challenge of imaging in radio interferometry. I will first overview the standard approach to imaging, wherein telescopes such as ALMA are purpose-built to observe at generational resolution and sensitivity, while the software that images the data uses an empirical, decades-old modeling framework that does not leverage the highest resolution and sensitivity information. Then I will discuss two modern, open-source software packages designed to perform imaging more accurately, quickly and autonomously, within a simple and well-documented software architecture. Comparing their performance on ALMA observations of protoplanetary disks to the standard imaging approach, I will show how these algorithms employ statistical techniques to simultaneously achieve higher resolution and sensitivity in their reconstructed images. Finally I will preview the new science these tools are driving in the protoplanetary disk field, including the Bayesian inference made possible by self-consistently imaging hundreds of datasets at high fidelity.
| 15:45 | Jeff Jennings | The Scientific Utility of Software Development: a Case Study in Radio Interferometry |
Noncommutative Geometry Weekly Seminar
Whitmore 320
2023-03-14
Weekly seminar meeting to explore locally-relevant research topics in noncommutative geometry in the context of mathematical physics under the connes program.
| 2:30 | Et. Al. | Noncommutative Geometry Seminar |
Condensed Atomic Molecular Physics (CAMP) Seminar
339 Davey Lab
2023-03-13
Speaker: Debanjan Chowdhury, Cornell Title: Useful Bounds on Superconducting Tc Abstract: Superconductivity in the limit of a vanishing bandwidth in isolated bands is a classic example of a non-perturbative problem, where BCS theory does not apply. What sets the superconducting phase stiffness, and relatedly the transition temperature, in this limit is of both fundamental and practical interest. This question has become especially relevant with the discovery of superconductivity in moiré materials. I will begin by examining critically the relevance of various proposed bounds on the superconducting transition temperature and propose a non-perturbative upper bound on the integrated optical spectral weight for partially filled electronic flat bands with generic density-density interactions. I will also present numerically exact results for the interplay between superconductivity and various competing orders in models of interacting flat-bands.
| 15:45 | Debanjan Chowdhury | Useful Bounds on Superconducting Tc |
Center for Fundamental Theory Meeting
538 Davey Lab
2023-03-13
Discussion topics will include center visibility, the center's description text, so-called "mini-courses" for faculty members to introduce their research. Coffee and bagels will be provided, and, as always, all IGC members are encouraged to attend.
| 14:00 | Jacob Bourjaily and Martin Bojowald | CFT Mini-course Discussion |
GAPP Seminar
320 Whitmore
2023-03-03
Maria Babiuc Hamilton
| 11:00 | Maria Babiuc Hamilton | Beyond Infinity: PITTNULL Code and the Cauchy-characteristic Extraction of Gravitational Waves |
CEHW Seminar
538 Davey Lab
2023-02-27 - 2023-03-03
Emily Rickman, Combining Exoplanet Measurement Techniques to Discover, Weigh and Characterize Cold Gas Giants
| 11:00 | Emily Rickman | Combining Exoplanet Measurement Techniques to Discover, Weigh and Characterize Cold Gas Giants |
Physics Colloquium
101 Osmond
2023-03-02
Adam Kaufman, Programmable Control of Indistinguishable Particles: From Sampling to Clocks to Qubits
| 15:45 | Adam Kaufman | 101 Osmond |
CMA-All Meeting
538 Davey Lab
2023-02-27
Center funding proposals, an update on LIGO O4, and thermal effects in binary neutron star mergers.
| 14:00 | Miguel Mostafa | Proposals, LIGO Update, and Thermal Effects in Neutron Star Mergers |
PUG Seminar
321 Whitmore
2023-02-24
Mary Ogborn, title to be announced
| 14:00 | Mary Ogborn | Title to be announced |
Black History Month 2023 Keynote - Moogega Cooper
100 Huck Life Sciences Building
2023-02-23
Diversity in STEAM from a Real-Life Guardian of the Galaxy
| 17:00 | Moogega Cooper | Diversity in STEAM from a Real-Life Guardian of the Galaxy |
Physics Colloquium
101 Osmond
2023-02-23
Zohar Komargodski, Semi-Classical Limits at Large Quantum Numbers
| 15:45 | Zohar Komargodski | Semi-Classical Limits at Large Quantum Numbers |
Astro Colloquium
538 Davey Lab
2023-02-22
Kailash C. Sahu, First Detection and Mass Measurement of an Isolated Black Hole through Astrometric Microlensing
| 15:45 | Kailash C. Sahu | First Detection and Mass Measurement of an Isolated Black Hole through Astrometric Microlensing |
CAMP Seminar
339 Davey Lab
2023-02-20
Katja Nowack, Understanding Electronic Transport through Local Magnetic Measurements
| 14:45 | Katja Nowack | Understanding Electronic Transport through Local Magnetic Measurements |
CEHW Seminar
12:30pm
2023-02-20
Andrew Pellegrino, DIAmante TESS Autoregressive Planet Search (DTARPS) Year 2
| 12:30 | Andrew Pellegrino | DIAmante TESS Autoregressive Planet Search (DTARPS) Year 2 |
IGC-All Meeting
538 Davey Lab
2023-02-20
Introductions for new members and visitors, upcoming proposal meetings, and information about the postdoc and student poster event.
| 14:00 | Sarah Shandera | Introductions and Updates |
GAPP Seminar
320 Whitmore
2023-02-17
Pietro Dona, An Overview of Covariant Loop Quantum Gravity
| 11:00 | Pietro Dona | An Overview of Covariant Loop Quantum Gravity |
PUG Seminar
321 Whitmore Lab
2023-02-17
Victoria Niu, A Discovery of Coleman’s False Vacuum Decay and its Cosmological Impact.
| 14:00 | Victoria Niu | Topic to be announced |
GAPP Seminar - Pietro Dona
320 Whitmore
2023-02-17
GAPP SEMINAR (Gravity, Astroparticle & Particle Physics) Friday, February 17th 11:00 am, 320 Whitmore Zoom link: https://psu.zoom.us/j/93737760341?pwd=Qlc4bWFDU0taSHhJK0RHeWMvendHZz09 Meeting: 937 3776 0341 Passcode: 150786 Speaker: Pietro Dona (CSTQ, Marseille) Title: An Overview of Covariant Loop Quantum Gravity Abstract: Covariant loop quantum gravity (or spin foam theory) defines a background-independent Lorentzian path integral for gravity. I will review its formulation and highlight its successes, open questions, and physical applications. Numerical calculations have been a major driving force in recent developments. I will overview the leading frameworks, their ingredients, and regimes of validity.
| 11:00 | Pietro Dona | An Overview of Covariant Loop Quantum Gravity |
Astro Colloquium
538 Davey Lab
2023-02-15
The Proposed STAR-X MIDEX Mission: Studying The Fast, Furious and Forming Universe in the X-ray and UV
| 15:45 | Ann Hornschemeier Cardiff | The Proposed STAR-X MIDEX Mission: Studying The Fast, Furious and Forming Universe in the X-ray and UV |
NCG Student Seminar
320 Whitmore
2023-02-14
Brief talks on NCG provided by graduate students.
| 2:30 | Jacob Brad | NCG talk #3 |
Shared CEHW Seminar
538 Davey Lab
2023-02-13
Tyler Richey-Yowell The UV and X-Ray Evolution of Low-Mass Stars Aishwarya Iyer The SPHINX Grid: New Model Atmospheres to Derive Fundamental M-Dwarf Properties Nuri Park Connecting Coronal Mass Ejections (CMEs) to Far-Ultraviolet Flares Peter Smith S'more Roasting Marshmallows - The Atmosphere of WASP-121 b is 13CO-enriched
| 11:15 | Tyler Richey-Yowell, Aishwarya Iyer, Nuri Park, Peter Smith | Shared Virtual Seminar |
CAMP Seminar
339 Davey Lab
2023-02-13
Martin Claassen, Topology and Light-Matter Interactions in Moiré Heterostructures
| 2:00 | Martin Claassen | An (Over)view of Covariant Loop Quantum Gravity |
PUG Seminar
321 Whitmore
2023-02-10
Erick Munio Garcia, Thermodynamics from Entanglement in QFT
| 14:00 | Erick Munio Garcia | Thermodynamics from Entanglement in QFT |
Astro Colloquium
538 Davey Lab
2023-02-08
Kristen McQuinn, Galaxy Evolution at the Faint-End of the Luminosity Function
| 17:00 | Kristen McQuinn | Galaxy Evolution at the Faint-End of the Luminosity Function |
ILQGS - Panel on black holes in LQG
339 Davey Lab
2023-02-07
International Loop Quantum Gravity Seminar Title: Panel on black holes in LQG Speakers: Muxin Han, Parampreet Singh, Ed Wilson-Ewing, Viqar Husain (Chair) Time & Location: 10am, 339 Davey Lab Zoom Link: https://lsu.zoom.us/j/97017759448?pwd=WG14eG9XdHJqVlZncHJCa1c0OFc3dz09
| 10:00 | Muxin Han, Parampreet Singh, Ed Wilson-Ewing, Viqar Husain (Chair) | Panel on black holes in LQG |
Camp Seminar
339 Davey Lab
2023-02-06
Suguru Yoshida, Atomic Displacements in Crystals: What Occurs and Why
| 15:45 | Suguru Yoshida | Atomic Displacements in Crystals: What Occurs and Why |
CTOC Meeting
538 Davey Lab
2023-02-06
CTOC-focused meeting led by Donghui Jeong, focusing on research updates.
| 14:00 | Donghui Jeong | CTOC Meeting |
PUG Seminar
321 Whitmore Lab
2023-02-03
James Kennington
| 14:00 | James Kennington | TBA |
Physics Colloquium
101 Osmond
2023-02-02
Riccardo Penco, From Black Holes to Superfluidity: Effective Theories of Point-Like Particles
| 15:45 | Riccardo Penco | From Black Holes to Superfluidity: Effective Theories of Point-Like Particles |
JWST: From First Light to First Science
538 Davey Lab and https://psu.zoom.us/j/92637070419
2023-02-01
Marshall Perrin Abstract: After decades of development by a globe-spanning team, JWST is now providing an unprecedented view of the cosmos. In this talk I will describe our experience thus far operating this new great observatory: from mission design history and development, to prelaunch preparations, to launch and commissioning, and now into the first of many years of mission operations at the Earth-Sun L2 point. I will provide a first-hand look at the processes and teamwork we used to deploy the observatory and align its segmented mirror system, and discuss some of the surprises (both challenges and good news) encountered during commissioning. Even from early in telescope commissioning, this observatory's tremendous power and sensitivity were already apparent with spectacular images and spectra. Now during science operations, we continue to learn more about observatory hardware performance; this is still early days in our adventure with JWST. I will close with a look at (a small fraction of) some of the early science results with JWST, with particular attention to our early imaging observations of nearby exoplanetary systems.
| 15:45 | Marshall Perrin | JWST: From First Light to First Science |
CAMP Seminar
339 Davey Lab
2023-01-30
He Zhao - Smectic Pair Density Wave Order in EuRbFe4As4
| 15:45 | He Zhao | Smectic Pair Density Wave Order in EuRbFe4As4 |
PUG Seminar
321 Whitmore Lab
2023-01-27
Kokkimidis Patatoukos
| 14:00 | Kokkimidis Patatoukos | Title TBA |
GAPP Seminar
320 Whitmore Lab
2023-01-27
Alexander Edison, Northwestern University
| 11:00 | Alexander Edison | Title TBA |
International Loop Quantum Gravity Seminar
Whitmore 320
2023-01-24
International Loop Quantum Gravity Seminar Hanno Sahlmann (FAU Erlangen) Chiral Super LQG 2023-01-24 at 10:00 Whitmore 320 Zoom: https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
| 10:00 | Hanno Sahlmann | Chiral Super LQG |
International Loop Quantum Gravity Seminar
339 Davey Lab and https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
2023-01-24
Hanno Stahlmann presents a talk entitled "Chiral Super Loop Quantum Gravity"
| 10:00 | Jorge Sofo | Chiral Super Loop Quantum Gravity |
CAMP Seminar
339 Davey Lab
2023-01-23
Jorge Sofo presents a talk entitled "Generalized Quantum Langevin Equation for Transport: The Case for Interband Coherences in the Electrical Conductivity" in 339 Davey Lab. Refreshments will be provided.
| 15:45 | Jorge Sofo | Generalized Quantum Langevin Equation for Transport: The Case for Interband Coherences in the Electrical Conductivity |
Katie Mack to Present SAGF Lecture
Foster Auditorium, Paterno Library
2023-01-23
Dr. Katie Mack is a theoretical astrophysicist exploring a range of questions in cosmology, the study of the universe from beginning to end. She currently holds the position of Hawking Chair in Cosmology and Science Communication at the Perimeter Institute for Theoretical Physics, where she carries out research on dark matter and the early universe and works to make physics more accessible to the general public. She is the author of the book “The End of Everything (Astrophysically Speaking)” and has written for a number of popular publications, such as Scientific American, Slate, Sky & Telescope, Time, and Cosmos magazine. She can be found on twitter as @AstroKatie.
| 13:00 | Katie Mack | Physics at the End of the Universe |
Conference for Undergraduate Women in Physics
HUB Center
2023-01-20 - 2023-01-22
Penn State is one a site for the 2023 CUWiP, a student-organized, APS supported conference for undergraduate women in physics. The featured speakers include accomplished IGC alums Dr. Sydney Chamberlin and Dr. Azadeh Keviani in the Explorers Talk Series. IGC will also host invited speaker Dr. Katie Mack, Hawking Chair in Cosmology and Science Communication at the Perimeter Institute for Theoretical Physics, for an extended visit following her talk in the CUWiP Explorers Series. More details about the event can be found at https://sites.psu.edu/cuwip2023/.
| 9:45 | Katie Mack | |
| 11:30 | Azadeh Keivani | |
| 9:00 | Sydney Chamberlin |
GAPP Seminar - Dhruv Desai
339 Davey and https://psu.zoom.us/j/93737760341?pwd=Qlc4bWFDU0taSHhJK0RHeWMvendHZz09
2022-12-13
Title: GRMHD Simulations of Neutrino-Driven Winds From Proto-Neutron Stars Abstract: Formed in the aftermath of a core-collapse supernova or neutron star merger, hot proto-neutron stars (PNSs) launch neutrino-driven winds within milliseconds, with the winds themselves lasting for tens of seconds. The PNS wind has long been considered a potential site for the nucleosynthesis of heavy elements (Z>60) via the rapid neutron capture process (r-process). Previous work has found that such winds are not favorable for r-process element production. I will present results of general relativistic magnetohydrodynamic simulations of the PNS wind with weak interactions, advanced microphysics and neutrino absorption. I will discuss how physical mechanisms of rapid rotation and strong magnetic fields of a PNS may independently affect wind dynamics and how these effects may change r- process viability.
| 13:30 | Dhruv Desai | GAPP: GRMHD Simulations of Neutrino-Driven Winds From Proto-Neutron Stars |
CTOC Meeting
538 Davey Lab
2022-12-12
| 14:00 | Donghui Jeong | CTOC Meeting |
PUG Seminar - James Gurian
321 Whitmore
2022-12-09
Title: Zero Metallicity in Zero CPU Hours Abstract: I will begin with a pedagogical review of the theory of the formation of the first stars and the current open questions in the field. I will then present a new, analytic model for the formation of these stars which clarifies the essential physics. Despite its simplicity, this model agrees with the stellar mass predicted by expensive radiation-hydrodynamical simulations to within a factor of a few over the entire relevant parameter space.
| 14:00 | James Gurian | Topic to be announced |
Special ILQGS
320 Whitmore and https://psu.zoom.us/j/94818831322
2022-12-07
Series: Special ILQGS Speaker: Fabio Mele (OIST) Title: Quantum frame relativity of subsystems, correlations, and (thermo)dynamics Time: 2:30pm, Wed, Dec.7th Room: 320 Whitmore Zoom (hybrid): https://psu.zoom.us/j/94818831322
| 14:30 | Fabio Mele | Quantum frame relativity of subsystems, correlations, and (thermo)dynamics |
Astro Colloquium
538 Davey Lab and https://psu.zoom.us/j/92637070419
2022-12-07
Galactic Archaeology in the Era of Large Surveys
| 15:45 | Keith Hawkins | Galactic Archaeology in the Era of Large Surveys |
No MAPchat this week
2022-12-06
| 16:00 | James Kennington | MAPchat postponed |
International Loop Quantum Gravity Seminar
318 Osmond
2022-12-06
Series: ILQGS Speaker: Qian Chen (ENS Lyon) Title: Entanglement in spin network states Time: 10am, Tue, Dec.6th Room: 318 Osmond Zoom (hybrid): https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
| 10:00 | Qian Chen | Entanglement in Spin Network States |
Workshop on Higher Structures
114 McAllister
2022-12-01 - 2022-12-04
The workshop will start around 2:00pm on Thursday, December 1 and end around noon on Sunday, December 4. No registration is required and all IGC members are encouraged to attend. Please see the event page for more information: https://personal.psu.edu/mps16/2022_PSU_workshop.html
| 14:00 | Ping Xu | Workshop on Higher Structures |
Physics Colloquium - Ivan Agullo
101 Osmond and https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2022-12-01
Analog Gravity, Hawking Radiation, and Quantum Information
| 15:45 | Ivan Agullo | Analog Gravity, Hawking Radiation, and Quantum Information |
Astro Colloquium - Mark Vogelsberger
538 Davey Lab and https://psu.zoom.us/j/92637070419
2022-11-30
Simulating Early Structure and Galaxy Formation - The THESAN Project
| 15:45 | Mark Vogelsberger | Simulating Early Structure and Galaxy Formation - The THESAN Project |
MAPchat - Samuel Wallace
320 Whitmore Lab
2022-11-29
Weak Convergence of PDE's
| 16:00 | Samuel Wallace | Weak Convergence of PDE's |
GAPP Seminar: On Entanglement in Quantum Field Theory
339 Davey Lab, and Zoom: https://psu.zoom.us/s/93737760341
2022-11-29
Speaker: Ivan Agullo (LSU) Title: On Entanglement in Quantum Field Theory Abstract: It is believed that even the simplest states in the simplest field theories are highly entangled. The main support for this statement comes from the Reeh-Schlieder theorem and calculations of entanglement entropy between a region of space and its complement. I will argue that these results do not provide much information about the entanglement between individual local degrees of freedom. I will then present a way of quantifying such entanglement and show that entanglement in field theory is significantly less ubiquitous than it is commonly believed.
| 13:30 | Ivan Agullo | On Entanglement in Quantum Field Theory |
CEHW Seminar - Hareesh Bhaskar
https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
2022-11-28
Mildly-Hierarchical Triple Dynamics and Applications to the Outer Solar System
| 10:00 | Hareesh Bhaskar | Mildly-Hierarchical Triple Dynamics and Applications to the Outer Solar System |
CFT Meeting
538 Davey Lab and https://psu.zoom.us/j/94790584999?pwd=RXJNa21jNmRxTFo0VHBWdlpCc3Nhdz09 (Password: 827251)
2022-11-28
A discussion of the center's goals and priorities, and a review of the center's description.
| 14:00 | Jacob Bourjaily and Martin Bojowald | A discussion of the center's goals and priorities, and a review of the center's description. |
International Loop Quantum Gravity Seminar
Online (Zoom Only) https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
2022-11-22
Eugenio Bianchi, Kristina Giesel, Eduardo Martin-Martinez, Ivan Agullo (Chair) Title: Panel on Quantum Information and Quantum Gravity https://relativity.phys.lsu.edu/ilqgs/ Online (Zoom Only)
| 10:00 | Eugenio Bianchi, Kristina Giesel, Eduardo Martin-Martinez, Ivan Agullo | Panel on Quantum Information and Quantum Gravity |
PUG Seminar - Ish Gupta
320 Whitmore
2022-11-18
Speaker: Ish Gupta Title: Lensing of Gravitational Waves
| 14:00 | Ish Gupta | Lensing of Gravitational Waves |
Astro Colloquium - Rachael Mandelbaum
538 Davey Lab and Zoom: https://psu.zoom.us/j/92637070419
2022-11-16
Speaker: Rachael Mandelbaum, Carnegie Mellon Title: Weak Lensing with the Hyper Suprime-Cam Survey – and Beyond!
| 15:45 | Rachael Mandelbaum | Weak Lensing with the Hyper Suprime-Cam Survey – and Beyond! |
MAPchat - Michael Plesser
320 Whitmore
2022-11-15
Michael Plesser - Why Good Variables Matter: Representations of Poincare with Additional Structure
| 16:00 | Michael Plesser | Why Good Variables Matter: Representations of Poincare with Additional Structure. |
CMA Meeting
538 Davey Lab and https://psu.zoom.us/j/94790584999?pwd=RXJNa21jNmRxTFo0VHBWdlpCc3Nhdz09 (Password: 827251)
2022-11-14
Finishing research updates, and a discussion on the center's purpose.
| 14:00 | Hugo Alberto Ayala Solares | Research Presentations and a Discussion About the Role of the Center |
PUG Seminar - Mauricio Gamonal
321 Whitmore
2022-11-11
Dealing with Higher Order Derivatives: From Particles to Cosmology
| 14:00 | Mauricio Gamonal | Dealing with Higher Order Derivatives: From Particles to Cosmology |
Physics Colloquium - Ashutosh Kotwai
101 Osmond and https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2022-11-10
The Heavyweight W Boson - An Upset to the Standard Model of Particle Physics
| 15:05 | Ashutosh Kotwai | An Upset to the Standard Model of Particle Physics |
Astro Colloquium - Josh Peek
538 Davey Lab and https://psu.zoom.us/j/92637070419
2022-11-09
The Interstellar Medium Beyond 3 Dimensions
| 15:45 | Josh Peek | The Interstellar Medium Beyond 3 Dimensions |
International Loop Quantum Gravity Seminar
318 Osmond and Zoom: https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
2022-11-08
Mehdi Assanioussi (University of Warsaw) Title: Matter in LQG https://relativity.phys.lsu.edu/ilqgs/
| 10:00 | Mehdi Assanioussi | Matter in LQG |
GAPP: Development and Construction of the High-Energy Light Isotope Experiment
339 Davey and Zoom: https://psu.zoom.us/s/93737760341
2022-11-08
Lucas Beaufore, University of Chicago The High Energy Light Isotope eXperiment (HELIX) is a balloon-borne magnet spectrometer which seeks to address critical questions in cosmic ray physics by measuring the chemical and isotopic abundances of key light isotopes in the cosmic ray flux. One such measurement, that of the ratio of Be-10/Be-9, will provide strong discrimination between cosmic ray propagation models. In its first of two planned flights, HELIX will measure these abundances up to the ~3 GeV/n region. The instrument consists of a 1T superconducting magnet, a gas particle tracking system placed in the bore of the magnet, an aerogel RICH with a focal plane made of Silicon Photomultipliers (SiPMs), a scintillating fiber hodoscope, and a scintillating paddle time-of-flight system. This talk will cover the design, construction, and calibration of HELIX's novel RICH as well as a brief overview of HELIX's payload.
| 13:30 | Lucas Beaufore | Development and Construction of the High-Energy Light Isotope Experiment |
MAPchat - Garett Wendell
320 Whitmore
2022-11-08
Calculation of Variances Behind Likelihood-free Inference
| 16:00 | Garett Wendell | Calculation of Variances Behind Likelihood-free Inference |
PUG Seminar - Jacob Fields
321 Whitmore Lab
2022-11-04
The Thermal Effects of the Nuclear Equation of State on Binary Neutron Star Mergers
| 14:00 | Jacob Fields | PUG Seminar |
Astro Hybrid Colloquium - Revealing the First Billion Years in the James Webb Era
538 Davey and https://psu.zoom.us/j/92637070419
2022-11-02
Eli Visbal, The University of Toledo
| 15:45 | Eli Visbal | Revealing the First Billion Years in the James Webb Era |
GAPP Seminar - The Search for Electromagnetic Counterparts to High-Energy Neutrinos
339 Davey and Zoom: https://psu.zoom.us/s/93737760341
2022-11-01
Robert Stein, Caltech
| 13:30 | Robert Stein | The Search for Electromagnetic Counterparts to High-Energy Neutrinos |
MAPchat Seminar
320 Whitmore Lab
2022-11-01
An Introduction to the Poincare Group
| 16:00 | Joshua Black | An Introduction to the Poincare group |
IGC-All Meeting
538 Davey and https://psu.zoom.us/j/94790584999?pwd=RXJNa21jNmRxTFo0VHBWdlpCc3Nhdz09 (Password: 827251)
2022-10-31
This week's IGC-All meeting is focused on networking and professional development for graduate students and postdocs. Attendees are welcome to posit agendas on the bulletin board: https://whiteboard.office.com/me/whiteboards/p/c3BvOmh0dHBzOi8vcGVubnN0YXRlb2ZmaWNlMzY1LW15LnNoYXJlcG9pbnQuY29tL3BlcnNvbmFsL3NlczQ3X3BzdV9lZHU%3d/b!w_jBzRYdq0-LOpzSFrS3Eu3IYN25SfhEoptSmuEawzT6csUIdCuhTbzcAzclWJ0j/017VD7SAEKESEPTAI2DRFJJNV2ROG5536C?ct=1667182743896&or=OWA-NT&cid=c956db36-0f2f-287c-4f67-bdf722823c86
| 14:00 | Sarah Shandera | IGC-All Meeting |
Physics Colloquium - Liang Fu
538 Davey Lab and Zoom: https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2022-10-27
Liang Fu presents on the topological state in the Mott insulator
| 16:45 | Liang Fu | The Topological State of the Mott Insulator |
Astronomy Colloquium - Eugene Chiang
538 Davey Lab and Zoom: https://psu.zoom.us/j/92637070419
2022-10-26
Eugene Chiang gives a primer on planet formation
| 17:00 | Eugene Chiang | A Primer on Planet Formation |
International Loop Quantum Gravity Seminar
318 Osmond and Zoom: https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
2022-10-25
Abhay Ashtekar on quantum field theory and space-like singularities.
| 10:00 | Abhay Ashtekar | Quantum field theory and space-like singularities |
GAPP Seminar: The Equation of State of QCD: Status and Perspectives
339 Davey Lab, and Zoom: https://psu.zoom.us/s/93737760341
2022-10-25
Claudia Ratti, University of Houston, discusses quantum chromodynamics simulations.
| 13:30 | Claudia Ratti | The Equation of State of QCD: Status and Perspectives |
CFT Meeting
538 Davey Lab and Zoom: https://psu.zoom.us/j/94790584999?pwd=RXJNa21jNmRxTFo0VHBWdlpCc3Nhdz09 (Password: 827251)
2022-10-24
The CFT meets in 538 Davey Lab to go over member introductions and present updates on research.
| 14:00 | Jacob Bourjaily and Martin Bojowald | Introductions/Research Updates |
PUG Seminar
321 Whitmore
2022-10-21
Kallan Berglund presents on quantum corrections in modified black holes and upcoming quasinormal mode predictions.
| 14:00 | Kallan Berglund | Quantum Corrections in Modified Black Holes and Upcoming Quasinormal Mode Predictions |
Physics Colloquium
101 Osmond
2022-10-20
Adam Riess, Johns Hopkins Surprises from the Expansion of the Universe
| 15:45 | Adam Riess | Surprises from the Expansion of the Universe |
Astronomy Colloquium
538 Davey Lab
2022-10-19
Sedona Price - Galaxy Structures Through Cosmic Time
| 15:45 | Sedona Price | Galaxy Structures Through Cosmic Time |
Astronomy Lunch Talk
538 Davey Lab
2022-10-18
Arnab Dhani - Precision Cosmology in the XG Era
| 12:00 | 538 Davey Lab | Astronomy Lunch Talk |
CMA Meeting
538 Davey Lab
2022-10-17
Miguel Mostafá presides over this month's CMA meeting. Attendees are invited to present an introduction and research update by submitting slides to: https://docs.google.com/presentation/d/1b4qiKOQA_E9C1qttdCTxKYblxmWCXTwcEGczjN5TY1Q/edit#slide=id.g1547379561b_0_53
| 14:00 | Miguel Mostafá | Introductions and Research Updates |
PUG Seminar - Joshua Black
321 Whitmore Lab
2022-10-07
This week's Primordial Universe and Gravity Seminar, with speaker Joshua Black, on the derivation of the Chandrasekhar mass.
| 14:00 | Joshua Black | Derivation of the Chandresekhar mass. |
Physics Colloquium: Jeff McMahon
101 Osmond and zoom
2022-10-06
Physics colloquium on progress in CMB observations.
| 15:45 | Jeff McMahon | CMB with ACT and CMB-S4 |
International Loop Quantum Gravity Seminar - Eugenio Bianchi
318
2022-10-04
International Loop Quantum gravity Seminar with speaker Eugenio Bianchi, discussing causality in classical and quantum gravity.
| 10:00 | Eugenio Bianchi | Causality in Quantum and Classical Gravity |
IGC-All Meeting
538 Davey Lab
2022-10-03
All-IGC meeting to discuss plans for the semester and initiatives for supporting research.
| 14:00 | Sarah Shandera | IGC-All meeting. |
PUG (Primordial Universe and Gravity) Seminar
321 Whitmore Lab
2022-09-30
Unnati Akhouri presents
| 14:00 | Unnati Akhouri | PUG Seminar |
Physics Colloquium
101 Osmond
2022-09-29
Tracy Slatyer of MIT presents on dark matter.
| 15:30 | Tracy Slatyer | Dark Matter |
Astronomy Colloquium
538 Davey Lab
2022-09-28
Ashley Villar presents on building deep learning methodologies for time-domain astrophysics.
| 15:30 | Ashley Villar | Building Deep Learning Methodologies for Time-Domain Astrophysics |
ILQGS (International Loop Quantum Gravity Seminar)
318 Osmond
2022-09-27
Alexander Jercher from LMU Munich presents on causality in spin foams.
| 10:00 | Alexander Jercher | Causality in Spin Foams |
CFT Faculty Meeting
538 Davey
2022-09-26
The monthly faculty meeting for the Center for Fundamental Theory
| 14:00 | Martin Bojowald and Jacob Bourjaily | Faculty meeting for the Center for Fundamental Theory |
CMA Faculty Meeting
538 Davey
2022-09-19
The Center for Multimessenger Astrophysics is hosting the next IGC meeting on Monday, Sept 19 at 2-3:00 PM in Davey 538. The meeting is dedicated to a broad discussion of the CMA's plans going forward for the Astrophysical Multimessenger Observatory Network (AMON). The meeting will be led by Stephanie Wissel and Hugo Ayala Solares. Attendees are welcome to submit a slide to showcase highlights from their research,including any IGC-CMA members that are involved using this link: https://docs.google.com/presentation/d/1b4qiKOQA_E9C1qttdCTxKYblxmWCXTwcEGczjN5TY1Q/edit?usp=sharing
| 14:00 | Stephanie Wissel and Hugo Solares | The monthly MMA Faculty Meeting |
Simons Foundation Collaboration Meeting
323 Whitmore
2022-09-16
Meeting to discuss LOIs for this call: https://www.simonsfoundation.org/grant/simons-collaborations-in-mathematics-and-the-physical-sciences/?tab=how-to-apply
| 14:00 | Sarah Shandera | Simons Foundation Collaboration Meeting |
CTOC Sept 12, 2022 meeting
538 Davey Lab
2022-09-12
Introductions and updates on Collaborations and research from CTOC members.
| 14:00 | Donghui Jeong | CTOC updates |
IGC Welcome Back Meeting 2022
538 Davey and on zoom
2022-08-29
A chance to introduce new people and provide updates about the IGC community.
| 14:00 | Sarah Shandera | Welcome back remarks and introductions |
| 14:15 | All | Updates from IGC members |
| 14:55 | Chad Hanna | Update on web site and digital presence |
2014-05-01 - 2014-05-03
2011-10-01 - 2011-10-02
2010-07-01 - 2010-07-02
2023-04-25
Congratulations to Ish Gupta for winning the Peter Clay Eklund Award for Science Communication
2023-04-25
Congratulations to IGC grad Unnati Akhouri for winning a Physics Department Service Award for her role in organizing the 2023 CUWiP conference at Penn State
2023-04-25
Kaeli Huges wins the APS DAP Dissertation Prize
2023-04-21
Congrats to Dr. Zoltan Fodor, who has been elected to the American Academy of Arts & Sciences!
2023-01-20
Katie Mack will present an SAGF Lecture entitled " Physics at the End of the Universe"
2022-12-19
Congratulations to the winners of IGC graduate student awards
2022-12-09
Today's PUG Seminar is postponed
2022-10-31
Happy Dark Matter Day
2022-10-24
Congrats to Nico Yunes, Radu Roiban and Zoltan Fodor
2022-09-16
Simons Meeting
2022-08-22
Welcome back to IGC!
IGC-Related Events this Week from 2023-04-10 to 2023-04-17
Condensed Atomic Molecular Physics (CAMP) Seminar
339 Davey Lab
2023-04-10
Xifan Wu, Unravelling the Mystery of Water and Aqueous Solutions by Theories of both Electronic Ground State and Excitation
| 15:45 | Xifan Wu | Unravelling the Mystery of Water and Aqueous Solutions by Theories of both Electronic Ground State and Excitation |
Center for Fundamental Theory Meeting
538 Davey Lab
2023-04-10
A discussion of the connections between IGC centers and the new directions the Center could go in.
| 14:00 | Martin Bojowald and Jacob Bourjaily | The CFT's new directions? |
Physics Colloquium
101 Osmond
2023-04-13
Steven Prohira, Ultrahigh Energy Neutrino Detection...with Radar?
| 15:45 | Steven Prohira | Ultrahigh Energy Neutrino Detection...with Radar? |
Gravity, Astroparticle and Particle Physics (GAPP) Seminar
320 Whitmore Lab
2023-04-14
Anuradha Gupta, Extracting Astrophysics from Spin Precession in Binary Black Holes
| 11:00 | Anuradha Gupta | Extracting Astrophysics from Spin Precession in Binary Black Holes |
Primordial Universe and Gravity (PUG) Seminar
321 Whitmore Lab
2023-04-14
Shio Sakon, topic to be announced
| 14:30 | Shio Sakon | Topic TBA |
Weekly Events from 2023-04-03 to 2023-04-03
CMA Meeting
538 Davey Lab
2023-04-03
News updates - We will have coffee and snacks, and everyone is welcome to come
| 14:00 | Miguel Mostafa | News updates |
Physics Colloquium - Zolton Fodor
339 Davey and https://psu.us8.list-manage.com/track/click?u=4226e3ef532a8590ae62886fb&id=beab6e7bef&e=9148850abf
2023-04-03
The Anomalous Magnetic Moment of the Muon
| 15:45 | Zolton Fodor | The Anomalous Magnetic Moment of the Muon |
International Loop Quantum Gravity Seminar
https://lsu.zoom.us/j/97017759448?pwd=WG14eG9XdHJqVlZncHJCa1c0OFc3dz09
2023-04-04
LQC of Black Holes in Loop Quantum Gravity, Beatriz Elizaga, LSU
| 10:00 | Beatriz Elizaga | LQC of Black Holes in Loop Quantum Gravity |
Friedman Lecture - John Mather
100 Thomas
2023-04-08
On Saturday April 8, the Astro Department is hosting a very unusual outreach visitor: Dr. John C. Mather, chief scientist of the James Webb Space Telescope and winner of the 2006 Nobel Prize in Physics for cosmology. Dr. Mather will be our 2023 Friedman Lecturer in Astronomy speaking to the public and University communities on JWST. This is expected to be the Department's largest outreach event in years. Breakfast will be held at 8:45-9:45AM in 114 McAllister. If you'd like to join for breakfast, please sign in here: https://docs.google.com/spreadsheets/d/1IzpPAspJ0KgsKI_lPwzZk5_e2fXQWDTg05JVMmNGQpw/edit#gid=0 A few small groups of researchers or students can meet with Dr. Mather from 10-12:00PM in 432 Davey. If you are interested, please send an email by Monday, the 27th, with your attendees to Drs. Feigelson and McEntaffer. Dr. Mather will give the public 2023 Friedman Lecture in Astronomy in 100 Thomas from 2:30-3:30pm. Please attend with friends and families.
| 14:30 | John Mather | Friedman Lecture |
This week's IGC-related events from 2023-03-27 to 2023-03-27
Condensed Atomic Molecular Physics (CAMP) Seminar - Ilya Sochnikov
339 Davey Lab
2023-03-27
Title: Tunable Magnetic Domains and Walls in a Noncentrosymmetric Ferromagnetic Weyl Semimetal Abstract: In Weyl semimetals, chirality is a new degree of freedom that has great potential for fundamental physics as well as for the development of new devices for storing and processing information. The combination of the topology of the Weyl fermions with magnetism is particularly attractive: magnetic Weyl materials are predicted to exhibit electromagnetic properties transformed by emergent gauge axial fields. To advance this field of research, it is essential to understand the detailed magnetic domains physics of these materials. In this study, we investigated spontaneous magnetization and magnetic susceptibility of a non-centrosymmetric ferromagnetic (FM) Weyl semimetal: CeAlSi
| 15:45 | Ilya Sochnikov | Tunable Magnetic Domains and walls in a Noncentrosymmetric Ferromagnetic Weyl Semimetal |
Center for Theoretical and Observational Cosmology Meeting
538 Davey Lab
2023-03-27
Jahmour Givans, a visiting postdoc and FFPS fellow at Princeton, will give a brief, informal presentation on "Modeling the Lyman-alpha forest autocorrelation and its cross-correlation with dark matter halos". Coffee and snacks will be provided as usual.
| 14:00 | Jahmour Givans | Modeling the Lyman-alpha forest autocorrelation and its cross-correlation with dark matter halos |
Special Condensed Atomic Molecular Physics (CAMP) Seminar - Xiaoliang Qi, Stanford
339 Davey Lab
2023-03-27
Title: Spacetime Mutual Information Abstract: Most quantum information measures are defined for quantum states. For example, mutual information measures the correlation between two subsystems in a quantum state. It is natural to ask whether correlation in spacetime can be characterized by some generalization of mutual information. In this work, we propose a space-time generalization of mutual information. The key idea is to consider a general "quantum experiment" that measures the correlation between two space-time regions, and use the setup of hypothesis testing. We discuss various properties of the spacetime mutual information, including how it provides an upper bound for all connected correlation functions, which is a direct generalization of the similar property of ordinary mutual information.
| 10:00 | Xiaoliang Qi | Spacetime Mutual Information |
Physics Colloquium - Zvi Bern
101 Osmond and https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2023-03-30
Title: From Quantum Scattering Amplitudes to Gravitational Waves Abstract: The remarkable detection of gravitational waves by the LIGO/Virgo collaboration has opened a new window into the cosmos. In this colloquium we explain how particle theorists can help out with calculations directly relevant for gravitational-wave emission from compact astrophysical objects. The past decade has seen enormous advances in our ability to compute quantum scattering amplitudes making seemingly impossible calculations tractable. These advances include ideas such as the duality between color and kinematics, double-copy relations, generalized unitarity, and improved integration methods. The starting point in this approach is that gravity is transmitted by a massless spin 2 particle. After introducing these concepts, we explain how these ideas are transferred to produce new state-of-the-art calculations for the astrophysical binary black hole inspiral problem.
| 15:45 | Zvi Bern | From Quantum Scattering Amplitudes to Gravitational Waves |
Primordial Universe and Gravity (PUG) Seminar
321 Whitmore Lab
2023-03-31
Jackson henry - Title and Abstract to be circulated later this week
| 14:30 | Jackson Henry | Title TBA |
Weekly IGC-related Events from 2023-03-20 to 2023-03-26
Condensed Atomic Molecular Physics (CAMP) Seminar - Quantum Phenomena in the Landau Levels of Atomically-Thin Transition Metal Dicalcogenides
Zoom: https://psu.zoom.us/j/96178311702?pwd=bWNHRXE5QUdkbTVEY1F3dFlhR3JvZz09
2023-03-20
Landau levels offer a neat model system to study emergent quantum phases, owing to the dominating Coulomb interactions and tunable orbital wavefunctions. In atomically-thin transition metal dicalcogenide, the well-resolved and -controlled spin, valley and layer degree of freedom further enriches the physics that can be explored. In this talk, I’ll discuss a few examples in WSe2: first, a bilayer WSe2 allows selective carrier population of the individual layers; when the filling factor of the two layers is an integer number, it manifests as a natural platform for interlayer exciton condensate. Second, a large imbalance in the population of two (pseudo)spins gives rise to spin-dependent transport in partially filled Landau levels - the spin-minority carriers are much less mobile than the spin-majority carriers. We explain such behavior using a polaron picture.
| 15:45 | Qianhui Shi | Quantum Phenomena in the Landau Levels of Atomically-thin Transition Metal Dicalcogenides |
IGC-all Meeting
538 Davey Lab
2023-03-20
Details about upcoming IGC events, including the Neighborhood Workshop, Art Showcase and External Advisory Board Meetings will be given. Coffee and snacks will be provided.
| 14:00 | Sarah Shandera | IGC-all Meeting |
Astro Colloquium - Data At Your Fingertips: Using Citizen Science in Undergraduate Astronomy Classrooms
538 Davey Lab
2023-03-22
Molly Simon - With big data on the rise, research teams across a multitude of disciplines are left with more data than they have time to analyze independently. Citizen science is an invaluable tool that involves crowdsourcing aspects of the data analysis process, enabling these research teams to solve problems involving large quantities of data more efficiently while simultaneously taking advantage of the inherently human talent for pattern recognition and anomaly detection.
| 15:45 | Molly Simon | Data At Your Fingertips: Using Citizen Science in Undergraduate Astronomy Classrooms |
Physics Colloquium - Visualizing Many Body Quantum States in Magical Flat Bands
101 Osmond and Zoom: https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2023-03-23
Ali Yazdani, University of Princeton
| 15:45 | Ali Yazdani | Visualizing Many Body Quantum States in Magical Flat Bands |
Primordial Universe and Gravity (PUG) Seminar
321 Whitmore
2023-03-24
Michael Plesser - Amplitudes beyond QFT: Correcting Coulomb and Newton with On-Shell Methods
| 14:00 | Michael Plesser | Amplitudes beyond QFT: Correcting Coulomb and Newton with On-Shell Methods |
This week's events from 2023-03-13 to 2023-03-19
Center for Fundamental Theory Meeting
538 Davey Lab
2023-03-13
Discussion topics will include center visibility, the center's description text, so-called "mini-courses" for faculty members to introduce their research. Coffee and bagels will be provided, and, as always, all IGC members are encouraged to attend.
| 14:00 | Jacob Bourjaily and Martin Bojowald | CFT Mini-course Discussion |
Noncommutative Geometry Weekly Seminar
Whitmore 320
2023-03-14
Weekly seminar meeting to explore locally-relevant research topics in noncommutative geometry in the context of mathematical physics under the connes program.
| 2:30 | Et. Al. | Noncommutative Geometry Seminar |
Astro Colloquium
538 Davey Lab
2023-03-15
Data is one of the fundamental quantities on which progress in astronomy is predicated. Yet there is often a disproportionate emphasis on immediate science results over the development of robust methods to process and even model the underlying data. In this talk I will present a case study demonstrating the benefits of investing in modern software development for data modeling – the challenge of imaging in radio interferometry. I will first overview the standard approach to imaging, wherein telescopes such as ALMA are purpose-built to observe at generational resolution and sensitivity, while the software that images the data uses an empirical, decades-old modeling framework that does not leverage the highest resolution and sensitivity information. Then I will discuss two modern, open-source software packages designed to perform imaging more accurately, quickly and autonomously, within a simple and well-documented software architecture. Comparing their performance on ALMA observations of protoplanetary disks to the standard imaging approach, I will show how these algorithms employ statistical techniques to simultaneously achieve higher resolution and sensitivity in their reconstructed images. Finally I will preview the new science these tools are driving in the protoplanetary disk field, including the Bayesian inference made possible by self-consistently imaging hundreds of datasets at high fidelity.
| 15:45 | Jeff Jennings | The Scientific Utility of Software Development: a Case Study in Radio Interferometry |
Physics Colloquium
101 Osmond and https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2023-03-16
I will discuss the need to extend the Standard Model of particle physics in order to describe the dark matter, a mysterious substance whose existence can be inferred from cosmological measurements, but whose fundamental nature remains unknown. I’ll discuss how a broad strategy of searching for dark matter using techniques from particle physics and astronomy maximize our chances of successfully discovering its identity, and what this could mean for future research in particle physics.
| 15:45 | Tim Tait | Casting a Wide Net for Dark Matter |
Gravity, Astroparticle and Particle Physics (GAPP) Seminar
320 Whitmore Lab
2023-03-17
I will explore the possibility that the couplings describing the strengths of the Standard Model gauge forces take different values at very early times. As I will show, such a scenario is typically consistent with current observations if the variation happens early enough, and can cause us to radically rethink processes such as dark matter production or the generation of the matter-anti-matter asymmetry.
| 11:00 | Tim Tait | Dynamical Couplings in the Early Universe |
Primordial Universe and Gravity (PUG) Seminar
321 Whitmore
2023-03-17
Rahul Kashyap, Relativistic Rotating Stars
| 14:00 | Rahul Kashyap | Relativistic Rotating Stars |
Weekly Events from 2023-02-27 to 2023-03-05
Physics Colloquium
101 Osmond
2023-02-02
Riccardo Penco, From Black Holes to Superfluidity: Effective Theories of Point-Like Particles
| 15:45 | Riccardo Penco | From Black Holes to Superfluidity: Effective Theories of Point-Like Particles |
CEHW Seminar
538 Davey Lab
2023-02-27 - 2023-03-03
Emily Rickman, Combining Exoplanet Measurement Techniques to Discover, Weigh and Characterize Cold Gas Giants
| 11:00 | Emily Rickman | Combining Exoplanet Measurement Techniques to Discover, Weigh and Characterize Cold Gas Giants |
CMA-All Meeting
538 Davey Lab
2023-02-27
Center funding proposals, an update on LIGO O4, and thermal effects in binary neutron star mergers.
| 14:00 | Miguel Mostafa | Proposals, LIGO Update, and Thermal Effects in Neutron Star Mergers |
GAPP Seminar
320 Whitmore
2023-03-03
Maria Babiuc Hamilton
| 11:00 | Maria Babiuc Hamilton | Beyond Infinity: PITTNULL Code and the Cauchy-characteristic Extraction of Gravitational Waves |
Weekly Events from 2023-02-20 to 2023-02-24
CAMP Seminar
339 Davey Lab
2023-02-20
Katja Nowack, Understanding Electronic Transport through Local Magnetic Measurements
| 14:45 | Katja Nowack | Understanding Electronic Transport through Local Magnetic Measurements |
CEHW Seminar
12:30pm
2023-02-20
Andrew Pellegrino, DIAmante TESS Autoregressive Planet Search (DTARPS) Year 2
| 12:30 | Andrew Pellegrino | DIAmante TESS Autoregressive Planet Search (DTARPS) Year 2 |
IGC-All Meeting
538 Davey Lab
2023-02-20
Introductions for new members and visitors, upcoming proposal meetings, and information about the postdoc and student poster event.
| 14:00 | Sarah Shandera | Introductions and Updates |
Astro Colloquium
538 Davey Lab
2023-02-22
Kailash C. Sahu, First Detection and Mass Measurement of an Isolated Black Hole through Astrometric Microlensing
| 15:45 | Kailash C. Sahu | First Detection and Mass Measurement of an Isolated Black Hole through Astrometric Microlensing |
Black History Month 2023 Keynote - Moogega Cooper
100 Huck Life Sciences Building
2023-02-23
Diversity in STEAM from a Real-Life Guardian of the Galaxy
| 17:00 | Moogega Cooper | Diversity in STEAM from a Real-Life Guardian of the Galaxy |
Physics Colloquium
101 Osmond
2023-02-23
Zohar Komargodski, Semi-Classical Limits at Large Quantum Numbers
| 15:45 | Zohar Komargodski | Semi-Classical Limits at Large Quantum Numbers |
PUG Seminar
321 Whitmore
2023-02-24
Mary Ogborn, title to be announced
| 14:00 | Mary Ogborn | Title to be announced |
Weekly Events from 2023-02-13 to 2023-02-19
CAMP Seminar
339 Davey Lab
2023-02-13
Martin Claassen, Topology and Light-Matter Interactions in Moiré Heterostructures
| 2:00 | Martin Claassen | An (Over)view of Covariant Loop Quantum Gravity |
Shared CEHW Seminar
538 Davey Lab
2023-02-13
Tyler Richey-Yowell The UV and X-Ray Evolution of Low-Mass Stars Aishwarya Iyer The SPHINX Grid: New Model Atmospheres to Derive Fundamental M-Dwarf Properties Nuri Park Connecting Coronal Mass Ejections (CMEs) to Far-Ultraviolet Flares Peter Smith S'more Roasting Marshmallows - The Atmosphere of WASP-121 b is 13CO-enriched
| 11:15 | Tyler Richey-Yowell, Aishwarya Iyer, Nuri Park, Peter Smith | Shared Virtual Seminar |
Astro Colloquium
538 Davey Lab
2023-02-15
The Proposed STAR-X MIDEX Mission: Studying The Fast, Furious and Forming Universe in the X-ray and UV
| 15:45 | Ann Hornschemeier Cardiff | The Proposed STAR-X MIDEX Mission: Studying The Fast, Furious and Forming Universe in the X-ray and UV |
GAPP Seminar - Pietro Dona
320 Whitmore
2023-02-17
GAPP SEMINAR (Gravity, Astroparticle & Particle Physics) Friday, February 17th 11:00 am, 320 Whitmore Zoom link: https://psu.zoom.us/j/93737760341?pwd=Qlc4bWFDU0taSHhJK0RHeWMvendHZz09 Meeting: 937 3776 0341 Passcode: 150786 Speaker: Pietro Dona (CSTQ, Marseille) Title: An Overview of Covariant Loop Quantum Gravity Abstract: Covariant loop quantum gravity (or spin foam theory) defines a background-independent Lorentzian path integral for gravity. I will review its formulation and highlight its successes, open questions, and physical applications. Numerical calculations have been a major driving force in recent developments. I will overview the leading frameworks, their ingredients, and regimes of validity.
| 11:00 | Pietro Dona | An Overview of Covariant Loop Quantum Gravity |
PUG Seminar
321 Whitmore Lab
2023-02-17
Victoria Niu, A Discovery of Coleman’s False Vacuum Decay and its Cosmological Impact.
| 14:00 | Victoria Niu | Topic to be announced |
Weekly Events from 2023-02-06 to 2023-02-12
Camp Seminar
339 Davey Lab
2023-02-06
Suguru Yoshida, Atomic Displacements in Crystals: What Occurs and Why
| 15:45 | Suguru Yoshida | Atomic Displacements in Crystals: What Occurs and Why |
CTOC Meeting
538 Davey Lab
2023-02-06
CTOC-focused meeting led by Donghui Jeong, focusing on research updates.
| 14:00 | Donghui Jeong | CTOC Meeting |
ILQGS - Panel on black holes in LQG
339 Davey Lab
2023-02-07
International Loop Quantum Gravity Seminar Title: Panel on black holes in LQG Speakers: Muxin Han, Parampreet Singh, Ed Wilson-Ewing, Viqar Husain (Chair) Time & Location: 10am, 339 Davey Lab Zoom Link: https://lsu.zoom.us/j/97017759448?pwd=WG14eG9XdHJqVlZncHJCa1c0OFc3dz09
| 10:00 | Muxin Han, Parampreet Singh, Ed Wilson-Ewing, Viqar Husain (Chair) | Panel on black holes in LQG |
Astro Colloquium
538 Davey Lab
2023-02-08
Kristen McQuinn, Galaxy Evolution at the Faint-End of the Luminosity Function
| 17:00 | Kristen McQuinn | Galaxy Evolution at the Faint-End of the Luminosity Function |
Weekly Events from 2023-01-30 to 2023-02-05
Physics Colloquium
101 Osmond
2023-02-02
Riccardo Penco, From Black Holes to Superfluidity: Effective Theories of Point-Like Particles
| 15:45 | Riccardo Penco | From Black Holes to Superfluidity: Effective Theories of Point-Like Particles |
CAMP Seminar
339 Davey Lab
2023-01-30
He Zhao - Smectic Pair Density Wave Order in EuRbFe4As4
| 15:45 | He Zhao | Smectic Pair Density Wave Order in EuRbFe4As4 |
Weekly Announcements - January 23 from 2023-01-23 to 2023-01-29
Katie Mack to Present SAGF Lecture
Foster Auditorium, Paterno Library
2023-01-23
Dr. Katie Mack is a theoretical astrophysicist exploring a range of questions in cosmology, the study of the universe from beginning to end. She currently holds the position of Hawking Chair in Cosmology and Science Communication at the Perimeter Institute for Theoretical Physics, where she carries out research on dark matter and the early universe and works to make physics more accessible to the general public. She is the author of the book “The End of Everything (Astrophysically Speaking)” and has written for a number of popular publications, such as Scientific American, Slate, Sky & Telescope, Time, and Cosmos magazine. She can be found on twitter as @AstroKatie.
| 13:00 | Katie Mack | Physics at the End of the Universe |
GAPP Seminar
320 Whitmore Lab
2023-01-27
Alexander Edison, Northwestern University
| 11:00 | Alexander Edison | Title TBA |
CAMP Seminar
339 Davey Lab
2023-01-23
Jorge Sofo presents a talk entitled "Generalized Quantum Langevin Equation for Transport: The Case for Interband Coherences in the Electrical Conductivity" in 339 Davey Lab. Refreshments will be provided.
| 15:45 | Jorge Sofo | Generalized Quantum Langevin Equation for Transport: The Case for Interband Coherences in the Electrical Conductivity |
International Loop Quantum Gravity Seminar
339 Davey Lab and https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
2023-01-24
Hanno Stahlmann presents a talk entitled "Chiral Super Loop Quantum Gravity"
| 10:00 | Jorge Sofo | Chiral Super Loop Quantum Gravity |
This Week's Events from 2022-12-05 to 2022-12-05
PUG Seminar - James Gurian
321 Whitmore
2022-12-09
Title: Zero Metallicity in Zero CPU Hours Abstract: I will begin with a pedagogical review of the theory of the formation of the first stars and the current open questions in the field. I will then present a new, analytic model for the formation of these stars which clarifies the essential physics. Despite its simplicity, this model agrees with the stellar mass predicted by expensive radiation-hydrodynamical simulations to within a factor of a few over the entire relevant parameter space.
| 14:00 | James Gurian | Topic to be announced |
No MAPchat this week
2022-12-06
| 16:00 | James Kennington | MAPchat postponed |
Astro Colloquium
538 Davey Lab and https://psu.zoom.us/j/92637070419
2022-12-07
Galactic Archaeology in the Era of Large Surveys
| 15:45 | Keith Hawkins | Galactic Archaeology in the Era of Large Surveys |
Special ILQGS
320 Whitmore and https://psu.zoom.us/j/94818831322
2022-12-07
Series: Special ILQGS Speaker: Fabio Mele (OIST) Title: Quantum frame relativity of subsystems, correlations, and (thermo)dynamics Time: 2:30pm, Wed, Dec.7th Room: 320 Whitmore Zoom (hybrid): https://psu.zoom.us/j/94818831322
| 14:30 | Fabio Mele | Quantum frame relativity of subsystems, correlations, and (thermo)dynamics |
GAPP Seminar - Dhruv Desai
339 Davey and https://psu.zoom.us/j/93737760341?pwd=Qlc4bWFDU0taSHhJK0RHeWMvendHZz09
2022-12-13
Title: GRMHD Simulations of Neutrino-Driven Winds From Proto-Neutron Stars Abstract: Formed in the aftermath of a core-collapse supernova or neutron star merger, hot proto-neutron stars (PNSs) launch neutrino-driven winds within milliseconds, with the winds themselves lasting for tens of seconds. The PNS wind has long been considered a potential site for the nucleosynthesis of heavy elements (Z>60) via the rapid neutron capture process (r-process). Previous work has found that such winds are not favorable for r-process element production. I will present results of general relativistic magnetohydrodynamic simulations of the PNS wind with weak interactions, advanced microphysics and neutrino absorption. I will discuss how physical mechanisms of rapid rotation and strong magnetic fields of a PNS may independently affect wind dynamics and how these effects may change r- process viability.
| 13:30 | Dhruv Desai | GAPP: GRMHD Simulations of Neutrino-Driven Winds From Proto-Neutron Stars |
International Loop Quantum Gravity Seminar
318 Osmond
2022-12-06
Series: ILQGS Speaker: Qian Chen (ENS Lyon) Title: Entanglement in spin network states Time: 10am, Tue, Dec.6th Room: 318 Osmond Zoom (hybrid): https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
| 10:00 | Qian Chen | Entanglement in Spin Network States |
Weekly Events - November 28 from 2022-11-28 to 2022-12-04
MAPchat - Samuel Wallace
320 Whitmore Lab
2022-11-29
Weak Convergence of PDE's
| 16:00 | Samuel Wallace | Weak Convergence of PDE's |
Physics Colloquium - Ivan Agullo
101 Osmond and https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2022-12-01
Analog Gravity, Hawking Radiation, and Quantum Information
| 15:45 | Ivan Agullo | Analog Gravity, Hawking Radiation, and Quantum Information |
CFT Meeting
538 Davey Lab and https://psu.zoom.us/j/94790584999?pwd=RXJNa21jNmRxTFo0VHBWdlpCc3Nhdz09 (Password: 827251)
2022-11-28
A discussion of the center's goals and priorities, and a review of the center's description.
| 14:00 | Jacob Bourjaily and Martin Bojowald | A discussion of the center's goals and priorities, and a review of the center's description. |
GAPP Seminar: On Entanglement in Quantum Field Theory
339 Davey Lab, and Zoom: https://psu.zoom.us/s/93737760341
2022-11-29
Speaker: Ivan Agullo (LSU) Title: On Entanglement in Quantum Field Theory Abstract: It is believed that even the simplest states in the simplest field theories are highly entangled. The main support for this statement comes from the Reeh-Schlieder theorem and calculations of entanglement entropy between a region of space and its complement. I will argue that these results do not provide much information about the entanglement between individual local degrees of freedom. I will then present a way of quantifying such entanglement and show that entanglement in field theory is significantly less ubiquitous than it is commonly believed.
| 13:30 | Ivan Agullo | On Entanglement in Quantum Field Theory |
Astro Colloquium - Mark Vogelsberger
538 Davey Lab and https://psu.zoom.us/j/92637070419
2022-11-30
Simulating Early Structure and Galaxy Formation - The THESAN Project
| 15:45 | Mark Vogelsberger | Simulating Early Structure and Galaxy Formation - The THESAN Project |
Weekly Events - November 14 from 2022-11-14 to 2022-11-23
This week's IGC-related events
CMA Meeting
538 Davey Lab and https://psu.zoom.us/j/94790584999?pwd=RXJNa21jNmRxTFo0VHBWdlpCc3Nhdz09 (Password: 827251)
2022-11-14
Finishing research updates, and a discussion on the center's purpose.
| 14:00 | Hugo Alberto Ayala Solares | Research Presentations and a Discussion About the Role of the Center |
Astro Colloquium - Rachael Mandelbaum
538 Davey Lab and Zoom: https://psu.zoom.us/j/92637070419
2022-11-16
Speaker: Rachael Mandelbaum, Carnegie Mellon Title: Weak Lensing with the Hyper Suprime-Cam Survey – and Beyond!
| 15:45 | Rachael Mandelbaum | Weak Lensing with the Hyper Suprime-Cam Survey – and Beyond! |
MAPchat - Michael Plesser
320 Whitmore
2022-11-15
Michael Plesser - Why Good Variables Matter: Representations of Poincare with Additional Structure
| 16:00 | Michael Plesser | Why Good Variables Matter: Representations of Poincare with Additional Structure. |
PUG Seminar - Ish Gupta
320 Whitmore
2022-11-18
Speaker: Ish Gupta Title: Lensing of Gravitational Waves
| 14:00 | Ish Gupta | Lensing of Gravitational Waves |
Weekly Events - November 7 from 2022-11-07 to 2022-11-13
This week's IGC-related events
GAPP: Development and Construction of the High-Energy Light Isotope Experiment
339 Davey and Zoom: https://psu.zoom.us/s/93737760341
2022-11-08
Lucas Beaufore, University of Chicago The High Energy Light Isotope eXperiment (HELIX) is a balloon-borne magnet spectrometer which seeks to address critical questions in cosmic ray physics by measuring the chemical and isotopic abundances of key light isotopes in the cosmic ray flux. One such measurement, that of the ratio of Be-10/Be-9, will provide strong discrimination between cosmic ray propagation models. In its first of two planned flights, HELIX will measure these abundances up to the ~3 GeV/n region. The instrument consists of a 1T superconducting magnet, a gas particle tracking system placed in the bore of the magnet, an aerogel RICH with a focal plane made of Silicon Photomultipliers (SiPMs), a scintillating fiber hodoscope, and a scintillating paddle time-of-flight system. This talk will cover the design, construction, and calibration of HELIX's novel RICH as well as a brief overview of HELIX's payload.
| 13:30 | Lucas Beaufore | Development and Construction of the High-Energy Light Isotope Experiment |
Physics Colloquium - Ashutosh Kotwai
101 Osmond and https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2022-11-10
The Heavyweight W Boson - An Upset to the Standard Model of Particle Physics
| 15:05 | Ashutosh Kotwai | An Upset to the Standard Model of Particle Physics |
MAPchat - Garett Wendell
320 Whitmore
2022-11-08
Calculation of Variances Behind Likelihood-free Inference
| 16:00 | Garett Wendell | Calculation of Variances Behind Likelihood-free Inference |
International Loop Quantum Gravity Seminar
318 Osmond and Zoom: https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
2022-11-08
Mehdi Assanioussi (University of Warsaw) Title: Matter in LQG https://relativity.phys.lsu.edu/ilqgs/
| 10:00 | Mehdi Assanioussi | Matter in LQG |
PUG Seminar - Mauricio Gamonal
321 Whitmore
2022-11-11
Dealing with Higher Order Derivatives: From Particles to Cosmology
| 14:00 | Mauricio Gamonal | Dealing with Higher Order Derivatives: From Particles to Cosmology |
Weekly Update - October 31 from 2022-10-31 to 2022-11-06
This week's IGC-related events
GAPP Seminar - The Search for Electromagnetic Counterparts to High-Energy Neutrinos
339 Davey and Zoom: https://psu.zoom.us/s/93737760341
2022-11-01
Robert Stein, Caltech
| 13:30 | Robert Stein | The Search for Electromagnetic Counterparts to High-Energy Neutrinos |
MAPchat Seminar
320 Whitmore Lab
2022-11-01
An Introduction to the Poincare Group
| 16:00 | Joshua Black | An Introduction to the Poincare group |
IGC-All Meeting
538 Davey and https://psu.zoom.us/j/94790584999?pwd=RXJNa21jNmRxTFo0VHBWdlpCc3Nhdz09 (Password: 827251)
2022-10-31
This week's IGC-All meeting is focused on networking and professional development for graduate students and postdocs. Attendees are welcome to posit agendas on the bulletin board: https://whiteboard.office.com/me/whiteboards/p/c3BvOmh0dHBzOi8vcGVubnN0YXRlb2ZmaWNlMzY1LW15LnNoYXJlcG9pbnQuY29tL3BlcnNvbmFsL3NlczQ3X3BzdV9lZHU%3d/b!w_jBzRYdq0-LOpzSFrS3Eu3IYN25SfhEoptSmuEawzT6csUIdCuhTbzcAzclWJ0j/017VD7SAEKESEPTAI2DRFJJNV2ROG5536C?ct=1667182743896&or=OWA-NT&cid=c956db36-0f2f-287c-4f67-bdf722823c86
| 14:00 | Sarah Shandera | IGC-All Meeting |
PUG Seminar - Jacob Fields
321 Whitmore Lab
2022-11-04
The Thermal Effects of the Nuclear Equation of State on Binary Neutron Star Mergers
| 14:00 | Jacob Fields | PUG Seminar |
GAPP: Development and Construction of the High-Energy Light Isotope Experiment
339 Davey and Zoom: https://psu.zoom.us/s/93737760341
2022-11-08
Lucas Beaufore, University of Chicago The High Energy Light Isotope eXperiment (HELIX) is a balloon-borne magnet spectrometer which seeks to address critical questions in cosmic ray physics by measuring the chemical and isotopic abundances of key light isotopes in the cosmic ray flux. One such measurement, that of the ratio of Be-10/Be-9, will provide strong discrimination between cosmic ray propagation models. In its first of two planned flights, HELIX will measure these abundances up to the ~3 GeV/n region. The instrument consists of a 1T superconducting magnet, a gas particle tracking system placed in the bore of the magnet, an aerogel RICH with a focal plane made of Silicon Photomultipliers (SiPMs), a scintillating fiber hodoscope, and a scintillating paddle time-of-flight system. This talk will cover the design, construction, and calibration of HELIX's novel RICH as well as a brief overview of HELIX's payload.
| 13:30 | Lucas Beaufore | Development and Construction of the High-Energy Light Isotope Experiment |
Astro Hybrid Colloquium - Revealing the First Billion Years in the James Webb Era
538 Davey and https://psu.zoom.us/j/92637070419
2022-11-02
Eli Visbal, The University of Toledo
| 15:45 | Eli Visbal | Revealing the First Billion Years in the James Webb Era |
Weekly Events - October 24 from 2022-10-24 to 2022-10-31
IGC and IGC-related events for the week of October 24, 2022.
International Loop Quantum Gravity Seminar
318 Osmond and Zoom: https://lsu.zoom.us/j/91721836632?pwd=OUpQdE52YmYwMW0vUWhBSHdRTmJtQT09
2022-10-25
Abhay Ashtekar on quantum field theory and space-like singularities.
| 10:00 | Abhay Ashtekar | Quantum field theory and space-like singularities |
Astronomy Colloquium - Eugene Chiang
538 Davey Lab and Zoom: https://psu.zoom.us/j/92637070419
2022-10-26
Eugene Chiang gives a primer on planet formation
| 17:00 | Eugene Chiang | A Primer on Planet Formation |
Physics Colloquium - Liang Fu
538 Davey Lab and Zoom: https://psu.zoom.us/j/93946951319?pwd=dFVHR21XbDExR0JQanNBUldENEFvQT09
2022-10-27
Liang Fu presents on the topological state in the Mott insulator
| 16:45 | Liang Fu | The Topological State of the Mott Insulator |
CFT Meeting
538 Davey Lab and Zoom: https://psu.zoom.us/j/94790584999?pwd=RXJNa21jNmRxTFo0VHBWdlpCc3Nhdz09 (Password: 827251)
2022-10-24
The CFT meets in 538 Davey Lab to go over member introductions and present updates on research.
| 14:00 | Jacob Bourjaily and Martin Bojowald | Introductions/Research Updates |
GAPP Seminar: The Equation of State of QCD: Status and Perspectives
339 Davey Lab, and Zoom: https://psu.zoom.us/s/93737760341
2022-10-25
Claudia Ratti, University of Houston, discusses quantum chromodynamics simulations.
| 13:30 | Claudia Ratti | The Equation of State of QCD: Status and Perspectives |
Weekly Update - October 17th from 2022-10-17 to 2022-10-21
IGC-related events for the week of October the 17th.
Physics Colloquium
101 Osmond
2022-10-20
Adam Riess, Johns Hopkins Surprises from the Expansion of the Universe
| 15:45 | Adam Riess | Surprises from the Expansion of the Universe |
PUG Seminar
321 Whitmore
2022-10-21
Kallan Berglund presents on quantum corrections in modified black holes and upcoming quasinormal mode predictions.
| 14:00 | Kallan Berglund | Quantum Corrections in Modified Black Holes and Upcoming Quasinormal Mode Predictions |
CMA Meeting
538 Davey Lab
2022-10-17
Miguel Mostafá presides over this month's CMA meeting. Attendees are invited to present an introduction and research update by submitting slides to: https://docs.google.com/presentation/d/1b4qiKOQA_E9C1qttdCTxKYblxmWCXTwcEGczjN5TY1Q/edit#slide=id.g1547379561b_0_53
| 14:00 | Miguel Mostafá | Introductions and Research Updates |
Astronomy Colloquium
538 Davey Lab
2022-10-19
Sedona Price - Galaxy Structures Through Cosmic Time
| 15:45 | Sedona Price | Galaxy Structures Through Cosmic Time |
Astronomy Lunch Talk
538 Davey Lab
2022-10-18
Arnab Dhani - Precision Cosmology in the XG Era
| 12:00 | 538 Davey Lab | Astronomy Lunch Talk |
Weekly Events - October 3rd from 2022-10-03 to 2022-10-10
This week's events
IGC-All Meeting
538 Davey Lab
2022-10-03
All-IGC meeting to discuss plans for the semester and initiatives for supporting research.
| 14:00 | Sarah Shandera | IGC-All meeting. |
Physics Colloquium: Jeff McMahon
101 Osmond and zoom
2022-10-06
Physics colloquium on progress in CMB observations.
| 15:45 | Jeff McMahon | CMB with ACT and CMB-S4 |
International Loop Quantum Gravity Seminar - Eugenio Bianchi
318
2022-10-04
International Loop Quantum gravity Seminar with speaker Eugenio Bianchi, discussing causality in classical and quantum gravity.
| 10:00 | Eugenio Bianchi | Causality in Quantum and Classical Gravity |
Weekly Events - September 26th from 2022-09-26 to 2022-10-01
Here are the events for the week of September the 26th:
Physics Colloquium
101 Osmond
2022-09-29
Tracy Slatyer of MIT presents on dark matter.
| 15:30 | Tracy Slatyer | Dark Matter |
PUG (Primordial Universe and Gravity) Seminar
321 Whitmore Lab
2022-09-30
Unnati Akhouri presents
| 14:00 | Unnati Akhouri | PUG Seminar |
Astronomy Colloquium
538 Davey Lab
2022-09-28
Ashley Villar presents on building deep learning methodologies for time-domain astrophysics.
| 15:30 | Ashley Villar | Building Deep Learning Methodologies for Time-Domain Astrophysics |
ILQGS (International Loop Quantum Gravity Seminar)
318 Osmond
2022-09-27
Alexander Jercher from LMU Munich presents on causality in spin foams.
| 10:00 | Alexander Jercher | Causality in Spin Foams |
CFT Faculty Meeting
538 Davey
2022-09-26
The monthly faculty meeting for the Center for Fundamental Theory
| 14:00 | Martin Bojowald and Jacob Bourjaily | Faculty meeting for the Center for Fundamental Theory |
CMA faculty meeting, PUG and more... from 2022-09-18 to 2022-09-24
Information about this week in the IGC.
CMA Faculty Meeting
538 Davey
2022-09-19
The Center for Multimessenger Astrophysics is hosting the next IGC meeting on Monday, Sept 19 at 2-3:00 PM in Davey 538. The meeting is dedicated to a broad discussion of the CMA's plans going forward for the Astrophysical Multimessenger Observatory Network (AMON). The meeting will be led by Stephanie Wissel and Hugo Ayala Solares. Attendees are welcome to submit a slide to showcase highlights from their research,including any IGC-CMA members that are involved using this link: https://docs.google.com/presentation/d/1b4qiKOQA_E9C1qttdCTxKYblxmWCXTwcEGczjN5TY1Q/edit?usp=sharing
| 14:00 | Stephanie Wissel and Hugo Solares | The monthly MMA Faculty Meeting |