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物理大讲堂-青年学者论坛(70)(在线报告)

必威官网登录:2020-06-08    点击:

报告题目:Pseudo Entropy, Entanglement and Holography

报告人:魏子夏(京都大学汤川理论物理研究所)

报告必威官网登录:2020年6月9日(星期二) 16:15(北京必威官网登录)

报告地点:在线报告 (ZOOM ID:625 8252 5050)

点击链接入会:https://cernet.zoom.com.cn/j/62582525050

报告摘要:A quantity, called pseudo entropy, is introduced as a generalization of entanglement entropy via post-selection in a general quantum system. This quantity is defined from 2 pure quantum states and an arbitrary bipartite factorization of the whole system. Pseudo entropy in holographic CFTs is dual to areas of minimal area surfaces in time-dependent Euclidean spaces which are asymptotically AdS. To see the speciality of holographic states implied by this duality, I will show a classification of quantum states with respect to the properties of pseudo entropy and study it in several quantum systems including qubit systems, free CFT, etc. The relationship between entanglement and pseudo entropy will also be discussed. If time allows, I will also talk about an operational meaning for a special class of quantum states and a generalization of pseudo entropy for mixed states.



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