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[9.23]Quantum Dimension as Entanglement Entropy in 2D RCFTs
文章来源:  |  发布时间:2015-08-26  |  浏览:

                                 Seminar

Title: Quantum Dimension as Entanglement Entropy in 2D RCFTs

Speaker: Dr. Song He  (Kyoto University)

Time: 10:00AM, Sep. 23rd (Wednesday)

Place: Theoretical Physics Division319

Abstract: We study entanglement entropy of excited states in two dimensional conformal field theories (CFTs). Especially we consider excited states obtained by acting primary operators on a vacuum. We show that under its time evolution, entanglement entropy increases by a finite constant when the causality condition is satisfied. Moreover, in rational CFTs, we prove that this increased amount of (both Renyi and von-Neumann) entanglement entropy always coincides with the log of quantum dimension of the primary operator. Finally, we extend this study to BCFT and decendent excitation states in 2D RCFT.

 
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