Connecting Compton and Gravitational Compton Scattering

The study of Compton scattering-S + gamma -> S + gamma- at MAMI and elsewhere has led to a relatively successful understanding of proton structure via its polarizabilities. The recent observation of gravitational radiation observed by LIGO has raised the need for a parallel understanding of gravitational Compton scattering-S + g -> S + g-and we show here how it can be obtained from ordinary Compton scattering by use of the double copy theorem.