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| (Seminar) On the relation between the magnitude and exponent of OTOCs |
| 2019-12-31
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CAS Key Laboratory of Theoretical Physics |
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Institute of Theoretical Physics |
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Chinese Academy of Sciences |
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Seminar |
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Title
题目 |
| On the relation between the magnitude and exponent of OTOCs | |
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Speaker
报告人 |
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Affiliation
所在单位 |
Harvard University |
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Date
日期 |
December 31 (Tuesday), 2019, 10:00-11:30 |
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Venue
地点 |
ITP South Building 6420 |
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Abstract
摘要 |
We derive an identity relating the growth exponent of early-time OTOCs, the pre-exponential factor, and a third number called "branching time". The latter is defined using the retarded kernel. This identity can be used to calculate stringy effects in the SYK and similar models. As another application, we consider an SYK chain. If the coupling strength is above a certain threshold the exponent in the butterfly wavefront is exactly saturating the Maldacena-Shenker-Stanford bound. |
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Contact Person
所内联系人 |
冼卓宇 | |
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