Covariant Multiloop Superstring Amplitudes

Preprint

7 October 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-th/0410079

Abstract

In these proceedings, the multiloop amplitude prescription using the super-Poincare invariant pure spinor formalism for the superstring is reviewed. Unlike the RNS prescription, there is no sum over spin structures and surface terms coming from the boundary of moduli space can be ignored. Massless N-point multiloop amplitudes vanish for N<4, which implies (with two mild assumptions) the perturbative finiteness of superstring theory. And R^4 terms receive no multiloop corrections in agreement with the Type IIB S-duality conjecture of Green and Gutperle.

Keywords

SUPERSTRING AMPLITUDES
AMPLITUDE PRESCRIPTION
MULTILOOP SUPERSTRING
MULTILOOP AMPLITUDE
COVARIANT MULTILOOP
MODULI SPACE

All Related Versions

Version 1, 2004-10-07, ArXiv
Published version: Comptes Rendus Physique, 6 (2), 185.

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