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October 17, 2025 past

PUG Seminar

Whitmore 321

PUG Seminar

Abstract: We live in a world of interactions. Everything you’ve ever experienced comes from something interacting with something else. No system is ever truly isolated. In an exactly solvable N-qubit network, we derive the dynamics of an ensemble of K-qubit open subsystems (K<N). We show that the change in system–environment entanglement governs the positivity of open dynamics. We explore how open dynamics positivity can serve as a probe of otherwise unobservable global structure.

Program

Date Time Speaker Title
2025-10-17 11:00 Tommy Chin Entanglement Governs Open Quantum Dynamics
About our wordmark
Monica Rincon Ramirez

The IGC wordmark was created by Monica Rincon Ramirez while she was a graduate student at the Institute. Monica enjoys drawing new connections between fundamental theory and observations. Her graduate work included general relativity, loop quantum gravity, and quantum fields in cosmological backgrounds; her thesis focused on effective quantum corrections to gravitational phenomena from spinfoams and applications to cosmology. She received her PhD in 2024.

The wordmark symbolizes the scope of research at the IGC. The base represents quantum gravity, evoking the quantum geometrical picture from spinfoams and loop quantum gravity — approaches studied at the Center for Fundamental Theory. The middle shows galaxies embedded in a smooth surface characteristic of spacetime in general relativity and the larger physical scales studied at the Center for Theoretical and Observational Cosmology. The top curves to an extreme representing a supermassive black hole accompanied by an energetic jet, with a binary black hole pair nearby — the high-energy phenomena studied at the Center for Multimessenger Astrophysics.