The one-loop five-graviton scattering amplitude and its low-energy limit

  title={The one-loop five-graviton scattering amplitude and its low-energy limit},
  author={J. L. Montag},
  journal={Nuclear Physics},
A covariant path-integral calculation of the even-spin structure contribution to the one-loop N-graviton scattering amplitude in the type-II superstring theory is presented. The apparent divergence of the N = 5 amplitude is resolved by separating it into twelve independent terms corresponding to different orders of inserting the graviton vertex operators. Each term is well defined in an appropriate kinematic region and can be analytically continued to physical regions where it develops branch… Expand
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