We report on the status of an ongoing effort to calculate the complete one-loop low-energy effective actions in Einstein-Maxwell theory with a massive scalar or spinor loop, and to use them for obtaining the explicit form of the corresponding M-graviton/N-photon amplitudes. We present explicit results for the effective actions at the one-graviton four-photon level, and for the amplitudes at the one-graviton two-photon level. As expected on general grounds, these amplitudes relate in a simple way to the corresponding four-photon amplitudes. We also derive the gravitational Ward identity for the 1PI one-graviton-N photon amplitude. © 2012 Pleiades Publishing, Ltd.
Photon-graviton amplitudes from the effective action / Bastianelli, F.; Corradini, O.; Davila, J. M.; Schubert, C.. - In: PHYSICS OF PARTICLES AND NUCLEI. - ISSN 1063-7796. - 43:5(2012), pp. 630-634. [10.1134/S1063779612050036]
Photon-graviton amplitudes from the effective action
Corradini O.;
2012
Abstract
We report on the status of an ongoing effort to calculate the complete one-loop low-energy effective actions in Einstein-Maxwell theory with a massive scalar or spinor loop, and to use them for obtaining the explicit form of the corresponding M-graviton/N-photon amplitudes. We present explicit results for the effective actions at the one-graviton four-photon level, and for the amplitudes at the one-graviton two-photon level. As expected on general grounds, these amplitudes relate in a simple way to the corresponding four-photon amplitudes. We also derive the gravitational Ward identity for the 1PI one-graviton-N photon amplitude. © 2012 Pleiades Publishing, Ltd.
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