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Institute of Theoretical Physics |
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Chinese Academy of Sciences |
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State Key Laboratory of Theoretical Physics |
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Seminar |
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Title
题目 |
Entanglement Entropy (Conical Entropy) in String Theory |
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Speaker
报告人 |
Song He（何松） |
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Date
日期 |
10:00, Sep 16 (Wednesday), 2015 |
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Venue
地点 |
ITP New Building 6420, 理论物理研究所新楼四层多媒体教室 |
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Abstract
摘要 |
In this talk, we study the conical entropy in string theory in the simplest setup of dividing the nine dimensional space into two halves. This corresponds to the leading quantum correction to the horizon entropy in string theory on the Rindler space. This entropy is also called the conical entropy and includes surface term contributions. We first derive a new simple formula of the conical entropy for any free higher spin fields. Then we apply this formula to computations of conical entropy in open and closed superstring. In our analysis of closed string, we study the twisted conical entropy defined by making use of string theory on Melvin backgrounds. This quantity is easier to calculate owing to the folding trick. Our analysis shows that the conical entropy in closed superstring is UV finite owing to the string scale cutoff. |
