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arXiv · 1101.1524

Eikonal methods applied to gravitational scattering amplitudes

Stephen G. Naculich·Howard J. Schnitzer
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Abstract

We apply factorization and eikonal methods from gauge theories to scattering amplitudes in gravity. We hypothesize that these amplitudes factor into an IR-divergent soft function and an IR-finite hard function, with the former given by the expectation value of a product of gravitational Wilson line operators. Using this approach, we show that the IR-divergent part of the n-graviton scattering amplitude is given by the exponential of the one-loop IR divergence, as originally discovered by Weinberg, with no additional subleading IR-divergent contributions in dimensional regularization.

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Stephen G. Naculich, Howard J. Schnitzer. 2013-06-24. Eikonal methods applied to gravitational scattering amplitudes. https://doi.org/10.1007/jhep05(2011)087

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