Three-Loop Superfiniteness of N=8 Supergravity

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dc.creatorBern, Z.
dc.creatorCarrasco, J. J.
dc.creatorDixon, L. J.
dc.creatorJohansson, H.
dc.creatorKosower, D. A.
dc.creatorRoiban, R.
dc.date2007-02-14
dc.date2007-07-11
dc.date.accessioned2026-07-07T11:59:40Z
dc.date.available2026-07-07T11:59:40Z
dc.descriptionWe construct the three-loop four-point amplitude of N=8 supergravity using the unitarity method. The amplitude is ultraviolet finite in four dimensions. Novel cancellations, not predicted by traditional superspace power-counting arguments, render its degree of divergence in D dimensions to be no worse than that of N=4 super-Yang-Mills theory -- a finite theory in four dimensions. Similar cancellations can be identified at all loop orders in certain unitarity cuts, suggesting that N=8 supergravity may be a perturbatively finite theory of quantum gravity.
dc.description5 pages, 4 figures. In v2 references and minor clarifications added
dc.identifierhttps://arxiv.org/abs/hep-th/0702112
dc.identifierhttp://arxiv.org/abs/hep-th/0702112
dc.identifierPhys.Rev.Lett.98:161303,2007
dc.identifierdoi:10.1103/PhysRevLett.98.161303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206644
dc.subjectHigh Energy Physics - Theory
dc.titleThree-Loop Superfiniteness of N=8 Supergravity
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