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Equivalent D=3 Supergravity Amplitudes from Double Copies of Three-Algebra and Two-Algebra Gauge Theories
Yu-tin Huang, Henrik Johansson
We show that three-dimensional supergravity amplitudes can be obtained as double copies of either three-algebra super-Chern-Simons matter theory or that of two-algebra super-Yang-M…
Ultraviolet Cancellations in Half-Maximal Supergravity as a Consequence of the Double-Copy Structure
Zvi Bern, Scott Davies, Tristan Dennen +1
We show that the double-copy structure of gravity forbids divergences in pure half-maximal (16 supercharge) supergravity at four and five points at one loop in D<8 and at two loops…
A new integral formula for supersymmetric scattering amplitudes in three dimensions
Yu-tin Huang, Sangmin Lee
We propose a new integral formula for all tree-level scattering amplitudes of N=6 supersymmetric Chern-Simons theory. It resembles the Roiban-Spradlin-Volovich-Witten formula for N…
One-loop renormalization and the S-matrix
Yu-tin Huang, David A. McGady, Cheng Peng
In four-dimensional theories with massless particles, the one-loop amplitudes can be expressed in terms of a basis of scalar integrals and rational terms. Since the scalar bubble i…
Absence of Three-Loop Four-Point Divergences in N=4 Supergravity
Zvi Bern, Scott Davies, Tristan Dennen +1
We compute the coefficient of the potential three-loop divergence in pure N=4 supergravity and show that it vanishes, contrary to expectations from symmetry arguments. The recently…