邀请人 (Invited by): 苗荣欣

时间 (Time): 星期五，2023 /11/10 -10：00-11：30

地点 (Location): 珠海校区瀚林 3 号楼B331会议室

摘要 (Abstract): 

In this talk I will talk about the partition of the Hilbert space of gravitational degrees of freedom in gravitational systems is studied hinted from the sub-spacetime observed by physically well-defined accelerating observers. The global conditions on what surfaces in an arbitrary gravitational spacetime could be the horizon of well-defined accelerating observers will be introduced. We will also define the concept of a generalized Rindler wedge (GRW) which is the spacetime region that could be observed by a certain accelerating observer. In this perspective, we explain the origin of the gravitational entropy associated with a horizon as coming from the degrees of freedom that the corresponding observer cannot observe and the resulting entropy should be the entanglement entropy between the GRW and its complementary spacetime. In asymptotic AdS spacetime, the boundary field theory correspondence of the GRW is a quantum state with certain IR entanglement structure removed. More consequences will also be introduced.

主讲人简介 (Speaker's CV): 

孙雅文，本科毕业于中国科学技术大学，2010年于中科院理论物理研究所取得物理博士学位。先后在莱顿大学、西班牙国家科学院理论物理所从事博士后研究工作，2015-06~2017-09为西班牙国家科学院理论物理所玛丽居里学者。现就职于中国科学院大学。研究领域为高能理论物理，引力，弦论，黑洞物理，引力/规范对偶。