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Tommy Chin

Tommy Chin — PhD Candidate — Graduate Student
Office: 301D Whitmore Laboratory
Address: 104 Davey Lab, Box 189, University Park PA 16802
wjc5509@psu.edu
6692331822
Tommy Chin
Physics Quantum Universe Dynamic Universe CFT CTOC IGC

I develop theoretical frameworks for open quantum systems that infer global properties from ensembles of local subsystem descriptions, with emphasis on correlations, non-Markovian dynamics, and quantum Fisher information for global parameters from local observations. These questions arise directly in cosmology and high-energy physics, where observations are fundamentally limited to partial access to correlated subsystems of a larger quantum system.

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ORCID: 0000-0002-7675-3960

Publications
  1. Tommy Chin, Sarah Shandera “Excitation Flow, Positivity, and Fisher Information for Open Subsystems of an N-Qubit Network.” (2026)
  2. Sean Prudhoe, Unnati Akhouri, Tommy Chin, Sarah Shandera “Effective Dynamics of Qubit Networks via Phase-Covariant Quantum Ensembles.” Open Systems & Information Dynamics 31 04 (2024) doi:10.1142/S1230161224500161
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.