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- Title
S-matrix singularities and CFT correlation functions.
- Authors
Cardona, Carlos; Huang, Yu-Tin
- Abstract
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 2 d/2 d correspondence.
- Subjects
CONFORMAL field theory; SCATTERING amplitude (Physics); LORENTZ groups; S-matrix theory; CONFORMAL geometry
- Publication
Journal of High Energy Physics, 2017, Vol 2017, Issue 8, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP08(2017)133