Note on scalar-graviton and scalar-photon-graviton amplitudes
arXiv:2007.05910 · doi:10.1140/epjc/s10052-020-8396-6
Abstract
In this short note, we propose an algorithm based on the expansions of amplitudes, the dimensional reduction technic and the differential operators, to calculate the tree level scalar-graviton amplitudes with two massive scalars, as well as the tree level scalar-photon-graviton amplitudes with two massive scalars and one photon. While applying the unitarity method, these amplitudes are necessary inputs for the calculation of post-Newtonian and post-Minkowskian expansions in general relativity for two massive charged objects interact with gravity and electromagnetic field.
25 pages, 9 figures
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