报告人：Robert B. Mann (加拿大滑铁卢大学，教授)

题目：The (Holographic) Chemistry of Black Holes

时间：10月24日（周一）下午4点

ZOOM ID：820 9377 8191

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.

报告人简历：

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 Teaching Excellence Award, Ontario Undergraduate Student Alliance in 2009, and Award for Excellence in Graduate Supervision, University of Waterloo in 2014. His recent interests include black holes, gravitation and particle physics, quantum gravity and string theory. He has published more than 500 papers, and one of which was cited more than 1000 times, and 12 of which were published and accepted in PRL. His total citation is over 20000 and H-index is 73.