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Anatomy of Geodesic Witten Diagrams
2017-05-23  【 】【打印】【关闭

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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