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| Anatomy of Geodesic Witten Diagrams |
| 2017-05-23
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| Institute of Theoretical Physics | | Chinese Academy of Sciences | | Key Laboratory of Theoretical Physics | | Seminar | | Title 题目 | Anatomy of Geodesic Witten Diagrams | | Speaker 报告人 | Heng-Yu Chen | | Affiliation 所在单位 | National Taiwan University | | Date 日期 | 3:30am, Wednesday, May 23, 2017 | | Venue 地点 | Conference Hall 322, ITP
| | Abstract 摘要 | In this talk, we revisit the so-called “Geodesic Witten Diagrams” (GWDs), proposed to be the holographic dual configuration of scalar conformal partial waves, from the perspectives of CFT operator product expansions. To this end, we explicitly consider three point GWDs which are natural building blocks of all possible four point GWDs, discuss their gluing procedure through integration over spectral parameter, and this leads us to a direct identification with the integral representation of CFT conformal partial waves. As a main application of this general construction, we consider the holographic dual of the conformal partial waves for external primary operators with spins. More- over, we consider the closely related “split representation” for the bulk to bulk spinning propagator, to demonstrate how ordinary scalar Witten diagram with arbitrary spin exchange, can be systematically decomposed into scalar GWDs. We also discuss how to generalize to spinning cases. | | Contact person 所内联系人 | Song He |
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