On the low energy limit of one loop photon-graviton amplitudes
High Energy Physics - Theory
2015-06-04 v2 General Relativity and Quantum Cosmology
Abstract
We present first results of a systematic study of the structure of the low energy limit of the one-loop photon-graviton amplitudes induced by massive scalars and spinors. Our main objective is the search of KLT-type relations where effectively two photons merge into a graviton. We find such a relation at the graviton-photon-photon level. We also derive the diffeomorphism Ward identity for the 1PI one graviton - N photon amplitudes.
Keywords
Cite
@article{arxiv.1202.4502,
title = {On the low energy limit of one loop photon-graviton amplitudes},
author = {F. Bastianelli and O. Corradini and J. M. Davila and C. Schubert},
journal= {arXiv preprint arXiv:1202.4502},
year = {2015}
}
Comments
14 pages, 1 figure. Final version to be published in Physics Letters B