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Article Dans Une Revue Physical Review Letters Année : 2018

General Relativity from Scattering Amplitudes

N.E. J. Bjerrum-Bohr
  • Fonction : Auteur
Poul H. Damgaard
  • Fonction : Auteur
Guido Festuccia
  • Fonction : Auteur
Ludovic Planté
  • Fonction : Auteur

Résumé

Weoutline the program to apply modern quantum field theory methods to calculate observables in classical general relativity through a truncation to classical terms of the multigraviton, two-body, on-shell scattering amplitudes between massive fields. Since only long-distance interactions corresponding to nonanalytic pieces need to be included, unitarity cuts provide substantial simplifications for both post-Newtonian and post-Minkowskian expansions. We illustrate this quantum field theoretic approach to classical general relativity by computing the interaction potentials to second order in the post-Newtonian expansion, as well as the scattering functions for two massive objects to second order in the post-Minkowskian expansion. We also derive an all-order exact result for gravitational light-by-light scattering.

Dates et versions

hal-01828000 , version 1 (02-07-2018)

Identifiants

Citer

N.E. J. Bjerrum-Bohr, Poul H. Damgaard, Guido Festuccia, Ludovic Planté, Pierre Vanhove. General Relativity from Scattering Amplitudes. Physical Review Letters, 2018, 121 (17), pp.171601. ⟨10.1103/PhysRevLett.121.171601⟩. ⟨hal-01828000⟩
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