TY - JOUR
T1 - Ultraviolet behavior of N=8 supergravity at four loops
AU - Bern, Z.
AU - Carrasco, John Joseph
AU - Dixon, L. J.
AU - Johansson, H.
AU - Roiban, R.
PY - 2009/8/17
Y1 - 2009/8/17
N2 - 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.
AB - 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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U2 - 10.1103/PhysRevLett.103.081301
DO - 10.1103/PhysRevLett.103.081301
M3 - Article
C2 - 19792710
AN - SCOPUS:68949127199
VL - 103
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 8
M1 - 081301
ER -