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S-matrix singularities and CFT correlation functions
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DOI：10.1007/JHEP08(2017)133.png)
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摘要
En 中文
In this note, we explore the correspondence between four-dimensional flat space S-matrix and two-dimensional CFT proposed by Pasterski et al. We demonstrate that the factorisation singularities of an n-point cubic diagram reproduces the AdS Witten diagrams if mass conservation is imposed at each vertex. Such configuration arises naturally if we consider the 4-dimensional S-matrix as a compactified massless 5-dimensional theory. This identification allows us to rewrite the massless S-matrix in the CHY formulation, where the factorisation singularities are re-interpreted as factorisation limits of a Riemann sphere. In this light, the map is recast into a form of 2d/2d correspondence.
Keyword:
Conformal Field Theory
Scattering Amplitudes
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期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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