F. Bastianelli, O. Corradini, J. M. Davila, C. Schubert
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.
View original:
http://arxiv.org/abs/1202.4502
No comments:
Post a Comment