报告人：ONE YEN CHIN 教授 扬州大学

题目：What Happens to Gravity When We Modify Entropy

时间：2024年10月18日（周五）16:00

地点：理工楼1226

邀请人：郭文帝、刘玉孝

报告摘要：

In recent years, many generalizations to the Bekenstein-Hawking entropy have been proposed, e.g., Tsallis entropy, Kaniadakis entropy, Barrow entropy etc. While the applications of these entropies have led to interesting results in both black hole physics and cosmology, there remain difficulties and confusions in the theoretical understanding. For example, in the literature, one finds debates concerning whether the Hawking temperature should also be modified, or whether the mass of the black hole is still the same as the thermodynamic energy. In this talk, I will discuss a possible route to give a consistent treatment of these issues, by considering the effect of generalized entropy on gravity. In other words, there should be a "modified gravity" that corresponds to generalized entropy. By utilizing Jacobson's method of deriving Einstein equations via thermodynamics, we will see that generically generalized entropy leads to "just" GR, but with a modified Newton's constant, which is now confusingly, area-dependent. I will discuss how we can possibly understand this.

报告人简介：

扬州大学物理科学与技术学院教授，国家优秀青年基金获得者。研究领域主要集中在广义相对论与引力，目前研究兴趣主要为黑洞热力学、推广不确定性原理、理论宇宙学等。在新加坡国立大学获得了数学系的硕士和荣誉学士学位，台湾大学博士毕业后赴位于瑞典的北欧理论物理研究所 (Nordita: Nordic Institute for Theoretical Physics) 任Nordita Fellow独立博士后。2016年获德国汉诺威大学黎曼几何与物理中心Riemann Fellowship访学。2017年底加入扬州大学，于2019年成为江苏省特聘教授。