Towards the higher point holographic momentum space amplitudes. Part II. Gravitons


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ALBAYRAK S., Kharel S.

JOURNAL OF HIGH ENERGY PHYSICS, no.12, 2019 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2019
  • Doi Number: 10.1007/jhep12(2019)135
  • Journal Name: JOURNAL OF HIGH ENERGY PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: AdS-CFT Correspondence, Conformal Field Theory, Scattering Amplitudes, Space-Time Symmetries
  • Middle East Technical University Affiliated: No

Abstract

In this follow up paper, we calculate higher point tree level graviton Witten diagrams in AdS(4) via bulk perturbation theory. We show that by rearranging the bulk to bulk graviton propagators, the calculations effectively reduce to the computation of a scalar factor. Analogous to the amplitudes for vector boson interactions we computed in the previous paper, scalar factors for the graviton exchange diagrams also become relatively simple when written in momentum space. We explicitly calculate higher point correlators and discuss how this momentum space formalism makes flat space and collinear limits simpler.