PIRSA:09110051

Perturbative cancellations in gravity theories

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}}
          }

John Joseph M. Carrasco University of California, Los Angeles

Talk numberPIRSA:09110051
DOI10.48660/09110051
Collection
Talk Type Conference

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.