报告人：Robert B. Mann 教授 加拿大滑铁卢大学

题目：The (Holographic) Chemistry of Black Holes

时间:2024年11月22日（周五）下午14:30

地点：理工楼1226

腾讯ID：991 238 125

邀请人：魏少文

报告摘要：

Black Holes are amongst the strangest objects in the universe. They form from the collapse of matter into an object whose gravitational pull is so strong, nothing can escape from them. Yet a black hole also radiates heat like a blackbody, with a temperature equal to its surface gravity, an entropy equal to its area, and an energy equal to its mass. Over the past 10 years we have come to understand the vacuum energy—as embodied by a cosmological constant—plays a pivotal role in the thermodynamic behaviour of black holes. Mass becomes chemical enthalpy, the notion of a thermodynamic volume appears, and black holes exhibit a broad range of chemical phenomena, including liquid/gas phase transitions similar to a Van der Waals fluid, triple points similar to that of water, re-entrant phase transitions that appear in gels and heat engines. Under certain conditions they can even behave like superfluid helium! Now known as “Black Hole Chemistry”, I will review this subject and then go on to describe new work that is providing a pathway toward understanding these phenomena from the perspective of Gauge-Gravity duality, in which phase transitions in the (gravitational) bulk become dual to phase transitions in the dual gauge theory.

报告人简介：

Robert B. Mann, a professor in University of Waterloo, Canada. He used to be President, Vice President, and Past President of Canadian Association of Physicists (2008-2011), Chair of Division of Theoretical Physics, Canadian Association of Physicists (1989-1991), Board Chair of Canadian Association of Physicists Foundation (2013-015). He obtained the National Medal of Teaching Excellence from the Canadian Association of Physicists (2019), a Teaching award from Ontario Undergraduate Student Alliance in 2009, and Award for Excellence in Graduate Supervision, University of Waterloo in 2014, and the University of Waterloo Distinguished Teaching Award in 2010. In 2022 he was awarded the distinction of “University Professor”, the highest distinction awarded to a faculty member at the University of Waterloo. His recent interests include black holes, gravitation and particle physics, quantum gravity and string theory. He has published more than 600 papers, andtwoof which was cited more than 1000 times. His total citation is over 27000 and H-index is 80.