Scattering equations, supergravity integrands, and pure spinors

Timothy Adamo, Eduardo Casali

Research output: Contribution to journalArticlepeer-review

Abstract

The tree-level S-matrix of type II supergravity can be computed in scattering equation form by correlators in a worldsheet theory analogous to a chiral, infinite tension limit of the pure spinor formalism. By defining a non-minimal version of this theory, we give a prescription for computing correlators on higher genus worldsheets which manifest spacetime supersymmetry. These correlators are conjectured to provide the loop integrands of supergravity scattering amplitudes, supported on the scattering equations. We give nontrivial evidence in support of this conjecture at genus one and two with four external states. Throughout, we find a close correspondence with the pure spinor formalism of superstring theory, particularly regarding regulators and zero-mode counting.
Original languageEnglish
Number of pages28
Journal Journal of High Energy Physics
DOIs
Publication statusPublished - 25 May 2015

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