报告题目:Pseudo Entropy, Entanglement and Holography
报告人:魏子夏(京都尊龙凯时汤川理论物理研究所)
报告时间:2020年6月9日(星期二) 16:15(北京时间)
报告地点:在线报告 (ZOOM ID:625 8252 5050)
点击链接入会:http://cernet.zoom.com.cn/j/62582525050
报告摘要:A quantity, called pseudo entropy, is introduced as a generalization ofentanglement entropy via post-selection in a general quantum system. Thisquantity is defined from 2 pure quantum states and an arbitrary bipartitefactorization of the whole system. Pseudo entropy in holographic CFTs is dualto areas of minimal area surfaces in time-dependent Euclidean spaces which areasymptotically AdS. To see the speciality of holographic states implied by thisduality, I will show a classification of quantum states with respect to theproperties of pseudo entropy and study it in several quantum systems includingqubit systems, free CFT, etc. The relationship between entanglement and pseudoentropy will also be discussed. If time allows, I will also talk about anoperational meaning for a special class of quantum states and a generalizationof pseudo entropy for mixed states.