报告题目：Islands and entanglement measures in communicating black holes

报告人：Mir Afrasiar

报告时间：2023年3月23日15:30

报告地点：线上会议#ZOOM：841 8324 1341 密码：693913

报告摘要

We obtain the holographic entanglement negativity and reflected entropy for bipartite mixed states at a finite temperature in baths described by conformal field theories dual to configurations involving two communicating black holes in braneworld geometries. In this context, we analyze the mixed state entanglement structure characterized by the information transfer between the black holes for two separate models. The first model involves communicating black holes in a Karch-Randall braneworld and $BCFT_2$s with two boundaries describing common bath systems for the radiation flux. The second model corresponds to a configuration of two-dimensional eternal JT black holes in a braneworld geometry involving two Planck branes coupled through shared bath systems described by $CFT_2$s. For both the models, our results reproduce analogues of the Page curves for the entanglement negativity obtained earlier in the context of random matrix theory and from geometric evaporation in JT black hole configurations. Our results also confirm the holographic duality between the reflected entropy and the bulk entanglement wedge cross-section in the context of the braneworld geometry.

报告人简介

Mir Afrasiar is a PhD student at the Department of Physics, Indian Institute of Technology (IIT), Kanpur, India. His research interests have mostly focused on various pure and mixed state entanglement and correlation measures such as entanglement entropy, entanglement negativity and reflected entropy for holographic conformal field theories in the context of the AdS/CFT correspondence.

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