PUG Seminar

Whitmore 321

2025-04-11

Speaker Katie Wild will be presenting on aspects of the LZ experiment. Friday April 11th, from 2:00 – 3:00 PM in the IGC lounge

PUG Seminar

Whitmore 321

2025-03-28

Speaker Joshua Black will be presenting on spinors. Friday March 28th, from 2:00 – 3:00 PM in the IGC lounge

Title: “What is a spinor”

PUG Seminar

Whitmore 321

2025-03-21

Speaker Michael Plesser will be presenting on the requirements of a non-abelian gauge theory.

Title: “Why (Non-Abelian) Gauge Theory?”

Abstract: Combining (flat-space) Lorentz-invariance with quantum mechanics in D=4 you inevitably describe a Quantum Field Theory (QFT), so the widespread interest in QFTs is understandable. Much more mysterious for many students is the passage to gauge theory, which introduces many sophisticated mathematical notions prone to overwhelming the uninitiated. Just as QFT arises as a necessary framework assuming certain basic principles, we will describe reasonable sounding theories for which non-abelian gauge theory is the necessary framework. The concrete statement we will argue is the following: a unitary, local, and Lorentz-invariant theory of massless, self-interacting, spin-1 particles in D=4 is necessarily a non-abelian gauge theory. Time allowing, we may discuss other interesting aspects of gauge theory relevant to my research.

PUG Seminar

Whitmore 321

2025-03-07

Ish Gupta, will be presenting on cosmic distances “A gravitational-wave alternative to cosmic measurements” Friday March 7th, from 2:00 – 3:00 PM in the IGC lounge

PUG Seminar

Whitmore 321 (IGC Lounge)

2025-02-21

This talk presents a study on the effects of neutrino oscillations in binary neutron star (BNS) merger simulations. I will talk about how we implement a subgrid model to simulate neutrino mixing with a 3D GRMHD code using M1 neutrino radiation transport. This is the first-ever simulation of BNS mergers incorporating neutrino flavor conversions. Our results reveal significant differences in the ejecta composition, neutrino luminosities, and nucleosynthesis features for the post-merger phase.

PUG Seminar

Whitmore 321

2025-02-14

Tomorrow’s speaker is Samarth Khandelwal, who will be presenting on wormholes

Events 2025-02-3

Various

2025-02-03 - 2025-02-10

• Astronomy Colloquium
  • Wednesday, February 5th, 2025, 3:45 – 5pm 538 Davey Lab
  • Speaker - Dong Lai
  • Title: Dynamical Formation of Merging Compact Binaries
• Physics Colloquium
  • Thursday, February 6th, 2025, 3:45 – 4:45pm 117 Osmond Laboratory
  • Speaker - Ivan Agulló
  • Title: Ivan Agulló: The Landscape of Entanglement in Quantum Field Theories: Theory Meets Experiment

PUG 02/07/2025

Whitmore 321

2025-02-07

Greg Lukens, who will be presenting on “Detecting primordial non-Gaussianities in Full- Sky surveys” Friday February 7th, from 2:00 – 3:00 PM in the IGC lounge

Heard on Campus: Lukas Muechler on quantum materials

Penn State Eberly College of Science

2025-02-04

“Quantum materials has emerged as a field recently as current devices are approaching their quantum limit,” said Lukas Muechler, assistant professor of chemistry and physics. Muechler recently spoke at Ashtekar Frontiers of Science, an annual public lecture series held by the Penn State Eberly College of Science, on the field of quantum materials.

In his presentation, Muechler described how he combines physics and chemistry in his quantum materials research. He works to tackle the challenge of “translating these concepts that theoretical physicists come up with into a language of chemistry,” by considering it, “not only a scientific challenge, but also a cultural challenge.”

Muechler ended his lecture by sharing that, “the cool thing about this interdisciplinary, broad science is that you make very human connections because you get to visit different countries, meet new people, and learn to think about a problem, like quantum materials, from so many angles,” and that, “quantum mechanics, quantum materials is the best field to do interdisciplinary science in.”

The 2025 Ashtekar Lecture series celebrates 100 years of quantum mechanics and the United Nations Educational, Scientific, and Cultural Organization International Year of Quantum Science and Technology with lectures that explore the depth and breadth of quantum research at Penn State and beyond.

Muechler was introduced by Ken Knappenberger, department head and professor of chemistry.

There are four lectures remaining in this year’s series. On Feb. 8, Xiantao Li will present “What can quantum computing do for scientific computing?” On Feb. 15, Marcos Rigol will present “A tale of two gases: Classical and quantum,” on Feb. 22, Abhinav Kandala will present “Accurate quantum computing,” and finally, on Mar. 1, Jun Zhu will present “Building a quantum information highway network with topological edge states.”

PUG Seminar

Whitmore 321

2025-01-30 - 2025-01-31

Erick Muiño, who will be presenting the talk “Do we need to postulate equal a priori probability?”

Abstract: “Statistical mechanics is built upon the postulate of equal a priori probability: in equilibrium, all microstates compatible with a given macrostate are equally probable. Despite its remarkable success, this assumption remains controversial. Several proposals suggest replacing it with quantum mechanical ideas. In this talk, I will present some arguments for abandoning this additional postulate, as it can be viewed as a consequence of entanglement.”

Ashtekar Frontiers of Science Lectures

Various

2025-01-25

The Ashtekar Frontiers of Science Lectures in the Eberly College of Science, a series of free public lectures now in its 31st year, will return to Penn State on Jan. 25.

This year’s lecture series, titled “2025: Year of Quantum,” will explore how physics at the smallest scales impacts materials, human health, computing, communications and more. The 2025 lecture series celebrates 100 years of quantum mechanics and the UNESCO International Year of Quantum Science and Technology with six lectures on consecutive Saturdays that explore the depth and breadth of quantum research at Penn State and beyond.

• January 25 in 100 Thomas Building

Sascha Meinrath, Palmer Chair in Telecommunications in the Donald P. Bellisario College of Communications at Penn State and director of X-Lab, will give a talk titled “Public interest technologists and the battle for privacy in the quantum age.”

• February 1 in 100 Thomas Building

Lukas Muechler, assistant professor of chemistry and physics, will give a talk titled “How chemistry and physics come together in quantum materials.”

• February 8 in 100 Thomas Building

Xiantao Li, professor of mathematics, will present a talk titled “What can quantum computing do for scientific computing?”

• February 15 in 001 Chemical and Biomedical Engineering Building

Marcos Rigol, professor of physics, will give a talk titled “A tale of two gases: Classical and quantum.”

• February 22 in 100 Thomas Building

Abhinav Kandala, principal research scientist at IBM Quantum who earned a Ph.D. in physics at Penn State in 2015, will present a talk titled “Accurate quantum computing.”

• March 1 in 001 Chemical and Biomedical Engineering Building

Jun Zhu, professor of physics, will present a talk titled “Building a quantum information highway network with topological edge states.”

Penn State encourages qualified persons with disabilities to participate in its programs and activities. If you anticipate needing any type of accommodation or have questions about physical access provided, you may call 814-867-5830 or email sci-comm@psu.edu in advance of your participation or visit.

PUG Seminar

Whitmore 321 (IGC Lounge)

2025-01-24

In this seminar, we will explore the interplay between quantum mechanics and general relativity by examining the behavior of a quantum clock in curved spacetime. Unlike a classical point mass, a quantum clock with nonzero position fluctuations cannot travel along a single geodesic. Instead, it behaves as an extended object influenced by tidal forces and a superposition of time dilations at different altitudes. Using a geometrical formulation of quantum mechanics, we will show that quantum correlations between spatial directions introduce a non-Riemannian structure to the spacetime experienced by the clock. A specific version of Finsler geometry provides a new setting for a combination of quantum and gravitational effects. The Finsler structure is parameterized by entropy and purity of the state, and uncertainty relations prevent it from being Riemannian. By unifying quantum and gravitational effects in a geometric framework, this approach offers new avenues for advancements in our understanding of quantum reference frames and their applications in semi-classical gravity.

Events 2024-12-9

Various

2024-12-09 - 2024-12-16

• GAPP Seminar

• Tuesday, December 10th, 2024, 2 - 3pm Davey 339
• Guest speaker – Jason Pollack
• Title: Generic ETH: Eigenstate Thermalization beyond the Microcanonical

• Special GAPP Seminar

• Tuesday, December 10th, 2024, 10 - 11am Whitmore 320
• Guest speaker – Greg Kaplanek
• Title: Feynman-Vemon goes cosmic: path intergrals for consmological open systems

• Astronomy Colloquium

• December 11th, 2024, 3:45 – 5pm 538 Davey Lab
• Speaker - Niel Brandt
• Title: Searching for Radio Star-Planet Interaction

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-12-13

Gravitational wave signals carry characteristic information about the astrophysical properties of compact objects, their immediate environment, and the nature of gravity in the strong-field dynamical regime. Bayesian inference has been the go-to tool for extracting this information. This talk will introduce it, using a quasi-spherical binary black hole merger as an illustrative example while ensuring accessibility to a broader audience. I might conclude by sharing the sins of prior choices!

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-12-06

The precise measurement of the cosmic microwave background (CMB) has opened a window to connect fundamental physics with observations. If spacetime exhibited a strong quantum mechanical behavior before the Hot Big Bang, could we detect signatures of this regime today? In this introductory seminar, we explore how the study of correlations in the CMB sky can address this question, highlighting recent developments and possible future avenues for an effective, evidence-based approach to quantum gravity.

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-11-15

Compact objects like neutron stars, black holes, and white dwarfs are studied through various observational channels, but distinguishing them often majorly depends on assumed mass ranges. Are these mass ranges theoretically robust, or could different compact objects act as “imposters” within overlapping ranges? This talk explores the limitations and biases in current classification methods and discusses their broader implications for fundamental physics.

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-11-08

Although classically black holes could be characterized as perfect absorbers, this is no longer true once quantum effects are taken into account. In fact, black holes are not black: they “glow red” with radiation. In this talk, we will introduce the Hawking effect and illustrate how it can be used to cook up some eggs. Physical implications will be qualitatively reviewed. The focus will be on building an intuitive picture of the physics by utilizing order-of-magnitude estimates and toy models.

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-11-01

A complete model for dark matter should be able to capture most, if not all, of the well-known phenomenology. Many attempts have been made to paint a complete picture of dark matter which reveal interesting observables that can be probed directly or in-directly. Exotic models of dark matter can include self-interactions (SIDM) or dissipation channels that can lead to the formation of compact objects. I will give a brief discussion on dark matter models and highlight their observable signatures.

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-10-25

This talk focuses on applications of emergent modified gravity. In this formulation, the spacetime is an emergent object with a nontrivial dependence on the phase space derived from modified structure functions resulting from the closure of modified constraints of the Hamiltonian formalism of gravity. Dynamical solutions of the spherically symmetric model include nonsingular black holes, new effects in gravitational collapse, and MOND-like effects at intermediate scales.

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-10-18

Gravitational microlensing is a powerful probe to measure the mass distribution of compact object populations. The simplest scenario is the point-source point-lens (PSPL) model, characterized by a time-symmetric light curve. Beyond PSPL, there are additional features that can show up under more complex conditions. We will also highlight upcoming microlensing surveys and their potential to detect compact objects, including compact objects related to dark matter.

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-10-11

Contrary to isolated closed systems studied in most textbooks, physical systems in nature tend to interact with their environment. To make a measurement, one will need to have their system interact with a measurement device whose wavefunction is too complicated to write down. The observable universe interacts with the unobservable universe. These are examples of open quantum systems. In this talk, we will introduce dynamical maps and our approach in developing a theory for open quantum systems.

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-10-04

TBA

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-09-27

In quantum models of space-time, the metric is often replaced by more fundamental entities, such as spins and Lorentz invariants in spin-foam models, which describe the dynamics of loop quantum gravity. However, in general relativity, the metric field is almost completely determined by the causal structure. This raises the question: how is causality encoded in spin-foam models? In this seminar, I will introduce the basic ingredients of spin-foams and discuss how causality is encoded.

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-09-16 - 2024-09-20

When a Kerr black hole is perturbed, it undergoes damped oscillations described by quasi-normal modes (QNMs) with decay times and complex frequencies completely determined by the black hole’s mass and spin. QNMs can be used to describe the gravitational-wave signal produced by the remnant of a binary black hole merger. This will be an introductory talk about QNMs and the tests of general relativity that can be performed by observing this “ringdown” phase, including key results from GW150914.

PUG Seminar

Whitmore 321 (IGC Lounge)

2024-09-13

NEST (Noble Element Simulation Technique) is a semi-empirical model that describes the charge and light signals generated by particle interactions in liquid noble elements. This tool is particularly effective for simulating the behavior of dark matter detectors that utilize liquid noble elements as target material. In this seminar, I will explain how NEST can be employed to simulate the detector response of liquid-xenon-based detectors used for direct dark matter search.

Primordial power spectrum in effective theories of inflation, Mauricio Gamonal, Penn State

https://relativity.phys.lsu.edu/ilqgs/gamonal091024.pdf

2024-09-10

International Loop Quantum Gravity Seminar

GAPP Seminar

Davey 339

2024-09-10

GAPP Seminar Tuesday, Sept. 10th at 2pm in Davey 339

Speaker: George Zahariade, Jagiellonian University (Poland) Title: Semiclassical Backreaction in Quantum Mechanics

Abstract: The backreaction of quantum degrees of freedom on classical backgrounds is a poorly understood topic in theoretical physics. Most often it is treated within the semiclassical approximation with the help of various ad hoc prescriptions accounting for the effect of quantum excitations on the dynamics of the background. In this talk I will focus on two popular ones: (i) the mean-field approximation whereby quantum degrees of freedom couple to the classical background via their quantum expectation values; (ii) the stochastic method whereby the fully coupled system is evolved using classical equations of motion for various randomly sampled initial conditions of the quantum degree of freedom, and a statistical average is done a posteriori. I will evaluate the performance of each method in a simple toy model against a fully quantum mechanical treatment, identify its regime of validity, and interpret the results in terms of quantum entanglement and loss of classicality of the background.

Special Seminar

323 Whitmore Lab

2024-07-25

Leonardo Chiesa (U Trento) will give a special seminar talk entitled: Detailed neutrino-matter interaction rates in binary neutron star mergers

GW170817 marked the first outstanding detection of a gravitational-wave signal from the coalescence of a binary neutron star (BNS) system. The successful follow-up campaign for electromagnetic counterparts has confirmed the remarkable scientific potential of BNS mergers as multi-messenger astrophysical sources. To fully harness this potential, reliable theoretical modeling is essential to avoid systematic errors when interpreting observations. For instance, the interplay between neutrinos and nuclear matter can generate distinct fingerprints on the coalescence, such as affecting the fate of the post-merger remnant or the final nucleosynthesis outcome in the ejecta. To properly model the impact of neutrinos in numerical BNS simulations, one should provide neutrino-matter interaction rates that are as accurate as possible. However, current implementations often rely on oversimplifications or omit potentially relevant neutrino-matter reactions.

To address this need, I will present a novel numerical library designed to evaluate detailed neutrino-matter interaction rates in the context of BNS mergers. The library incorporates the impact of various physical effects on the rates, which are typically not considered in standard implementations. As an application example, I will exploit the library to predict typical neutrino rates for thermodynamics conditions taken from the post-merger phase of BNS merger simulations with moment-truncated (M1) neutrino transport. Such a study can help to identify the minimum set of relevant reactions and the corresponding accuracy needed to precisely predict the impact of neutrinos on the system.

Special Seminar

323 Whitmore Lab

2024-07-23

Authur Offermans (KU Leuven) will give a special seminar talk entitled: A general-relativistic full Boltzmann solver based on the finite volume method

Simulations of astrophysical systems where neutrinos play a significant role, like core-collapse supernovae, would ideally solve the neutrino transport equation fully, i.e. solve the full Boltzmann equation. Because of its very high computational cost (6+1D), simulations generally rely on approximations of the equation that are more affordable. It is however difficult to estimate what is lost through these approximations and their impact on the system if we do not have access to a full solution. Therefore, we developed a multidimensional full Boltzmann solver based on the Finite Volume method within the GRMHD simulation code Gmunu. We will present our solver, discuss some of the challenges related to a full Boltzmann solver and show the performance of our solver on some first test cases.

Remembrance for Valerie

321 Whitmore Lab

2024-04-18

On Friday, April 19th, 4-5:30pm, the IGC will host a gathering to remember the life and science of Valerie Lindner in Whitmore Lab.

2024 IGC Art Showcase

321 Whitmore Lab

2024-04-16

The second annual IGC Art Showcase will be held on April 18th from 5-7pm. Journey through the intersection of art and science with fellow IGC members! Pizza and light refreshments will be provided.

Neutrino Focus Session

Davey 339, Whitmore 320

2024-04-11 - 2024-04-12

Recently the Particle Physics Prioritization Panel report emphasized the importance of neutrino physics, building on the recommendation of the Astro2020 Decadal Survey to explore multimessenger astrophysics. During the meeting we will explore the strengths in the CMA and IGC related to neutrino physics and astrophysics and look for areas of commonality. The goal is to develop a vision for joint projects, perhaps building on existing projects like AMON or developing new ones.

GAPP Seminar - Weak Gravitational Lensing from the Ground, the Stratosphere, and Space

339 Davey Lab

2024-04-09

Jacqueline McCleary, Northeastern University

The standard model of cosmology (aka L+Cold Dark Matter or LCDM) has successfully explained astrophysical observations as diverse as anisotropies in the cosmic microwave background, baryon acoustic oscillations, and the flatness of galaxy rotation curves. A key phenomenon within the LCDM framework is weak gravitational lensing, which describes the small distortions of more distant galaxies due to the gravitational influence of intervening matter. Gravitational lensing is thus a direct probe of all matter, dark and baryonic, offering insights into the universe’s total mass densityWM and the clustering amplitude of cosmic structures (s8).

In this seminar, I will describe three very different campaigns to measure weak gravitational lensing signal from the ground (LoVoCCS), in the stratosphere (SuperBIT), and from space (COSMOS-Web). The discussion will focus on the unique features of each of these observational programs, how they advance our ability to constrainWM and s8,and what they could ultimately contribute to our evolving understanding of dark matter’s role in structure formation.

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.

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.

Special Condensed Atomic Molecular Physics (CAMP) Seminar

318 Osmond

2023-04-21

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

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

Primordial Universe and Gravity (PUG) Seminar

321 Whitmore Lab

2023-04-14

Shio Sakon, topic to be announced

Gravity, Astroparticle and Particle Physics (GAPP) Seminar

320 Whitmore Lab

2023-04-14

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?

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

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.

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.

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

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

CMA Meeting

538 Davey Lab

2023-04-03

News updates - We will have coffee and snacks, and everyone is welcome to come

Primordial Universe and Gravity (PUG) Seminar

321 Whitmore Lab

2023-03-31

Jackson henry - Title and Abstract to be circulated later this week

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.

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.

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

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.

Primordial Universe and Gravity (PUG) Seminar

321 Whitmore

2023-03-24

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

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.

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.

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.

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.

Primordial Universe and Gravity (PUG) Seminar

321 Whitmore

2023-03-17

Rahul Kashyap, Relativistic Rotating Stars

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.

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.

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.

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.

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.

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

GAPP Seminar

320 Whitmore

2023-03-03

Maria Babiuc Hamilton

Physics Colloquium

101 Osmond

2023-03-02

Adam Kaufman, Programmable Control of Indistinguishable Particles: From Sampling to Clocks to Qubits

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.

PUG Seminar

321 Whitmore

2023-02-24

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

Physics Colloquium

101 Osmond

2023-02-23

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

CEHW Seminar

12:30pm

2023-02-20

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.

CAMP Seminar

339 Davey Lab

2023-02-20

Katja Nowack, Understanding Electronic Transport through Local Magnetic Measurements

GAPP Seminar

320 Whitmore

2023-02-17

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.

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.

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

NCG Student Seminar

320 Whitmore

2023-02-14

Brief talks on NCG provided by graduate students.

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

CAMP Seminar

339 Davey Lab

2023-02-13

Martin Claassen, Topology and Light-Matter Interactions in Moiré Heterostructures

PUG Seminar

321 Whitmore

2023-02-10

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

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

CTOC Meeting

538 Davey Lab

2023-02-06

CTOC-focused meeting led by Donghui Jeong, focusing on research updates.

Camp Seminar

339 Davey Lab

2023-02-06

Suguru Yoshida, Atomic Displacements in Crystals: What Occurs and Why

PUG Seminar

321 Whitmore Lab

2023-02-03

James Kennington

Physics Colloquium

101 Osmond

2023-02-02

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.

CAMP Seminar

339 Davey Lab

2023-01-30

He Zhao - Smectic Pair Density Wave Order in EuRbFe4As4

GAPP Seminar

320 Whitmore Lab

2023-01-27

Alexander Edison, Northwestern University

PUG Seminar

321 Whitmore Lab

2023-01-27

Kokkimidis Patatoukos

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”

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

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.

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.

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/.

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.

CTOC Meeting

538 Davey Lab

2022-12-12

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.

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

Astro Colloquium

538 Davey Lab and https://psu.zoom.us/j/92637070419

2022-12-07

Galactic Archaeology in the Era of Large Surveys

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

No MAPchat this week

2022-12-06

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

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

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

MAPchat - Samuel Wallace

320 Whitmore Lab

2022-11-29

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.

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.

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

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)

PUG Seminar - Ish Gupta

320 Whitmore

2022-11-18

Speaker: Ish Gupta Title: 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!

MAPchat - Michael Plesser

320 Whitmore

2022-11-15

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.

PUG Seminar - Mauricio Gamonal

321 Whitmore

2022-11-11

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

Astro Colloquium - Josh Peek

538 Davey Lab and https://psu.zoom.us/j/92637070419

2022-11-09

The Interstellar Medium Beyond 3 Dimensions

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.

MAPchat - Garett Wendell

320 Whitmore

2022-11-08

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/

PUG Seminar - Jacob Fields

321 Whitmore Lab

2022-11-04

The Thermal Effects of the Nuclear Equation of State on Binary Neutron Star Mergers

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

MAPchat Seminar

320 Whitmore Lab

2022-11-01

An Introduction to the Poincare Group

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

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

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

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

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.

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.

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.

PUG Seminar

321 Whitmore

2022-10-21

Kallan Berglund presents on 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

Astronomy Colloquium

538 Davey Lab

2022-10-19

Sedona Price - Galaxy Structures Through Cosmic Time

Astronomy Lunch Talk

538 Davey Lab

2022-10-18

Arnab Dhani - Precision Cosmology in the XG Era

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

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.

Physics Colloquium: Jeff McMahon

101 Osmond and zoom

2022-10-06

Physics colloquium on progress in CMB observations.

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.

IGC-All Meeting

538 Davey Lab

2022-10-03

All-IGC meeting to discuss plans for the semester and initiatives for supporting research.

PUG (Primordial Universe and Gravity) Seminar

321 Whitmore Lab

2022-09-30

Unnati Akhouri presents

Physics Colloquium

101 Osmond

2022-09-29

Tracy Slatyer of MIT presents on dark matter.

Astronomy Colloquium

538 Davey Lab

2022-09-28

Ashley Villar presents on 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.

CFT Faculty Meeting

538 Davey

2022-09-26

The monthly 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

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

CTOC Sept 12, 2022 meeting

538 Davey Lab

2022-09-12

Introductions and updates on Collaborations and research from CTOC members.

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.