Eikonal methods applied to gravitational scattering amplitudes

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 byWeinberg, with no additional subleading IR-divergent contributions in dimensional regularization. © SISSA 2011.

About this item

Creator
Stephen G. Naculicha
Howard J. Schnitzerb
Date
2011-01-01
Bowdoin Department or Program
Physics and Astronomy
Subject
Models of quantum gravity
Supergravity models
Access
Open access

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