报告题目：Beyond Einstein Gravity: Black Holes and Cosmology
报告人：Bum-Hoon Lee 教授 （Sogang University）
报告时间：2024年10月10日（周四）下午15:30-16:30
报告地点：北洋园校区49教410室
报告摘要：
Not only the theoretical arguments but also some recent precise measurements challenging the standard cosmological model motivate the gravity theory beyond Einstein. After a brief explanation of the motivation to go beyond Einstein‘s Gravity, we focus on the dilaton-Einstein-Gauss-Bonnet(dEGB) Gravity which is one of the simplest extensions of Einstein’s gravity with higher curvatures both in 4 and higher spacetime dimensions. The black hole thermo- dynamics in various theories in relation to the quantum system through holography will be described. As for dEGB, the prominent property unlike Einstein's gravity is the existence of a minimum mass below which the black hole cannot be formed. Finally, we sketch the implication of this theory on cosmological evolution. The major message is that it opens new possible phases at higher temperatures, in addition to the well-accepted radiation, matter, and cosmological constant dominant phases of the standard cosmological model.
报告人简介：
Prof. Bum-Hoon Lee obtained his Ph.D. from Columbia University in 1989, and then became a professor at Hanyang University and Sogang University. From 2005 to 2014, he promoted the construction of QUeST (Center for Quantum Space Time) and served as the first director. After 2015, he served as the president of the Korean Physical Society (KPS), Asia Pacific Center for Theoretical Physics (APCTP), and Korea Council of High Energy Physics. He received many honors such as the SungBong Prize of the Korean Physical Society in 2023, Minister Citation of Contribution to Securing Research Ethics in 2022, Presidential Medal in 2022, and Minister Citation of Contribution to the Basic Research Promotion in 2012. He is also the editor of International Journal of Physics A, Modern Physics Letters A. His works have been cited more than 3000 times, with an H-index of 30. His recent research interests include gravity, cosmology, and string theory.
