On Non-Perturbative Unitarity in Gravitational Scattering
High Energy Physics - Theory
2019-11-19 v3 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We argue that the tree-level graviton-scalar scattering in the Regge limit is unitarized by non-perturbative effects within General Relativity. At Planckian energy the back reaction of the incoming graviton on the background geometry produces a non-perturbative plane wave which, in turn, softens the UV-behavior. Our amplitude then interpolates between the perturbative graviton-scalar scattering at low energy and scattering on a classical plane wave in the Regge limit.
Keywords
Cite
@article{arxiv.1902.08409,
title = {On Non-Perturbative Unitarity in Gravitational Scattering},
author = {Ivo Sachs and Tung Tran},
journal= {arXiv preprint arXiv:1902.08409},
year = {2019}
}
Comments
v3: published version. Minor change