General Relativity from Scattering Amplitudes.

@article{BjerrumBohr2018GeneralRF,
  title={General Relativity from Scattering Amplitudes.},
  author={Niels Emil Jannik Bjerrum-Bohr and Poul Henrik Damgaard and Guido Nicola Innocenzo Festuccia and Ludovic Plant{\'e} and Pierre Vanhove},
  journal={Physical review letters},
  year={2018},
  volume={121 17},
  pages={
          171601
        }
}
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… CONTINUE READING
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