报告题目：Probing Hawking radiation through capacity of entanglement

报告人： Tatsuma Nishioka

报告时间：2021年9月28日（星期二）14：30（北京时间）

报告地点：必赢电子游戏网站前卫校区物理楼302，在线报告（ZOOM ID： 908 967 6284）

报告摘要：

The capacity of entanglement is one of quantum information measures that plays a similar role as heat capacity in thermodynamics when the replica parameter is regarded as the inverse temperature. We examine whether the capacity of entanglement can probe gravitational phase transitions associated with a black hole evaporation process. In toy models describing Hawking radiation, we find the capacity typically shows a peak or discontinuity around the Page time when the dominant gravitational saddle switches between replica wormholes of different topologies. Similarly the capacity is shown to be sensitive to the dominant gravitational saddle in the JT gravity, being an invaluable diagnostic for a black hole evaporation process.

报告人简介：

Tatsuma Nishioka received his Ph.D. from Kyoto University in 2010. He worked as a PD at Princeton University and IAS, Princeton from 2010 to 2014. From 2014 to 2020, he worked as a assistant professor in University of Tokyo. Currently, he is an associate professor at YITP. Tatsuma Nishioka is interested in string theory, quantum gravity, and quantum field theory.

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