Ultraviolet behavior of N=8 supergravity at four loops

Z. Bern; John Joseph Carrasco; L. J. Dixon; H. Johansson; R. Roiban

doi:10.1103/PhysRevLett.103.081301

Ultraviolet behavior of N=8 supergravity at four loops

Z. Bern^*, John Joseph Carrasco, L. J. Dixon, H. Johansson, R. Roiban

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

190 Scopus citations

Abstract

We describe the construction of the complete four-loop four-particle amplitude of N=8 supergravity. The amplitude is ultraviolet finite, not only in four dimensions, but in five dimensions as well. The observed extra cancellations provide additional nontrivial evidence that N=8 supergravity in four dimensions may be ultraviolet finite to all orders of perturbation theory.

Original language	English (US)
Article number	081301
Journal	Physical review letters
Volume	103
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.103.081301
State	Published - Aug 17 2009

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "We describe the construction of the complete four-loop four-particle amplitude of N=8 supergravity. The amplitude is ultraviolet finite, not only in four dimensions, but in five dimensions as well. The observed extra cancellations provide additional nontrivial evidence that N=8 supergravity in four dimensions may be ultraviolet finite to all orders of perturbation theory.",

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AU - Roiban, R.

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