Is N = 8 Supergravity Ultraviolet Finite?

Details Is N = 8 Supergravity Ultraviolet Finite? Is N = 8 Supergravity Ultraviolet Finite?

2006-11-08

arxiv.org/abs/hep-th/0611086v1

Phys.Lett.B644:265-271,2007

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, 5 figures, revtex

Scientific paper

10.1016/j.physletb.2006.11.030

Conventional wisdom holds that no four-dimensional gravity field theory can be ultraviolet finite. This understanding is based mainly on power counting. Recent studies confirm that one-loop N = 8 supergravity amplitudes satisfy the so-called `no-triangle hypothesis', which states that triangle and bubble integrals cancel from these amplitudes. A consequence of this hypothesis is that for any number of external legs, at one loop N = 8 supergravity and N = 4 super-Yang-Mills have identical superficial degrees of ultraviolet behavior in D dimensions. We describe how the unitarity method allows us to promote these one-loop cancellations to higher loops, suggesting that previous power counts were too conservative. We discuss higher-loop evidence suggesting that N = 8 supergravity has the same degree of divergence as N = 4 super-Yang-Mills theory and is ultraviolet finite in four dimensions. We comment on calculations needed to reinforce this proposal, which are feasible using the unitarity method.

Affiliated with

Also associated with

No associations

Rating

Is N = 8 Supergravity Ultraviolet Finite? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Is N = 8 Supergravity Ultraviolet Finite?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Is N = 8 Supergravity Ultraviolet Finite? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-625497