N >= 4 Supergravity Amplitudes from Gauge Theory at Two Loops
Description:
We present the full two-loop four-graviton amplitudes in N = 4, 5, 6 supergravity. These results were obtained using the double-copy structure of gravity, which follows from the recently conjectured color-kinematics duality in gauge theory. The two-loop four-gluon scattering amplitudes in N = 0, 1, 2 supersymmetric gauge theory are a second essential ingredient. The gravity amplitudes have the expected infrared behavior: the two-loop divergences are given in terms of the squares of the correspo…
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Date:
February 15, 2012
Creator:
Boucher-Veronneau, C. & Dixon, L. J.
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