The amplitude for classical gravitational scattering at third Post-Minkowskian order
JOURNAL OF HIGH ENERGY PHYSICS(2021)
Abstract
bstract We compute the scattering amplitude for classical black-hole scattering to third order in the Post-Minkowskian expansion, keeping all terms needed to derive the scattering angle to that order from the eikonal formalism. Our results confirm a conjectured relation between the real and imaginary parts of the amplitude by Di Vecchia, Heissenberg, Russo, and Veneziano, and are in agreement with a recent computation by Damour based on radiation reaction in general relativity.
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Key words
Scattering Amplitudes,Classical Theories of Gravity,Effective Field Theories
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