PIRSA:09110051 Conference

DOI10.48660/09110051

Conference/School: Asymptotic Safety-30 Years After - 2009

Carrasco, J.J.M. (2009). Perturbative cancellations in gravity theories. Perimeter Institute. https://pirsa.org/09110051

Carrasco, John Joseph M.. Perturbative cancellations in gravity theories. Perimeter Institute, Nov. 07, 2009, https://pirsa.org/09110051 

@misc{ pirsa_PIRSA:09110051,
  doi = {10.48660/09110051},
  url = {https://pirsa.org/09110051},
  author = {Carrasco, John Joseph M.},
  keywords = {},
  language = {en},
  title = {Perturbative cancellations in gravity theories},
  publisher = {Perimeter Institute},
  year = {2009},
  month = {nov},
  note = {PIRSA:09110051 see, \url{https://pirsa.org}}
}

Abstract

I will present recent results through four loops demonstrating that the maximally supersymmetric (N=8) generalization of gravity is surprisingly well behaved in the ultraviolet as a result of unexpected cancellations between contributing terms. These cancellations first manifest at one loop in the form of the "no-triangle property," with all-loop order implications through unitarity. I will conclude by discussing similar novel cancelations identified in pure Einstein gravity, at one loop, which suggest a possible explanation for the unexpectedly tame high energy behavior of N=8 supergravity beyond the limited UV protection of supersymmetry.

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