Graviton-photon scattering

Authors :: Ludovic Planté
Barry R. Holstein
Pierre Vanhove
N. E. J. Bjerrum-Bohr
Niels Bohr Institute [Copenhagen] (NBI)
Faculty of Science [Copenhagen]
University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)
Service de Physique Théorique (SPhT)
Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)
Source :: Physical Review D. 91
Publication Year :: 2015
Publisher :: American Physical Society (APS), 2015.
Abstract: We use the feature that the gravitational Compton scattering amplitude factorizes in terms of Abelian QED amplitudes to evaluate various gravitational Compton processes. We examine both the QED and gravitational Compton scattering from a massive spin-1 system by the use of helicity amplitude methods. In the case of gravitational Compton scattering we show how the massless limit can be used to evaluate the cross section for graviton-photon scattering and discuss the difference between photon interactions and the zero mass spin-1 limit. We show that the forward scattering cross section for graviton photoproduction has a very peculiar behavior, differing from the standard Thomson and Rutherford cross sections for a Coulomb-like potential.<br />LaTeX, 33 pages, 5 figures; v2 typos corrected, version to be published in PRD