ABSTRACT
At high temperatures and densities, nuclear matter undergoes deconfinement into quark matter. However, Witten proposed in 1984 that strange quark matter could be the true ground state of nuclear matter even at low temperatures and zero pressure, suggesting that strange quark stars might be a new type of compact star. This talk presents the speaker's recent pioneering proposals in this area, including up-down quark matter, unified interacting quark matter, new types of phase transitions, the resulting new types of compact stars, and their advantages in addressing recent astrophysical observations
BIOGRAPHY
Dr. Chen Zhang is an IAS Postdoctoral Fellow at the HKUST Jockey Club Institute for Advanced Study. He received his BS in Physics in 2013 from Nanjing University, his MSc in 2014 from the University of Toronto, and his PhD in 2020 from the University of Toronto, and subsequently held joint postdoctoral positions from 2020 to 2021 at the University of Toronto and the University of Waterloo. His recent research focuses on interdisciplinary studies spanning particle physics. He has published 3 papers in Physical Review Letters among his 24 research articles, with his work on up-down quark matter and high-frequency gravitational-wave detection featured in science news outlets such as Science, Nature Astronomy, Phys.org, and others
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