On the low energy limit of one loop photon-graviton amplitudes

Details On the low energy limit of one loop photon-graviton amplitudes On the low energy limit of one loop photon-graviton amplitudes

2012-02-21

arxiv.org/abs/1202.4502v1

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 1 figure. arXiv admin note: text overlap with arXiv:0912.2384

Scientific paper

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.

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