Semiclassical scattering amplitudes of dressed gravitons

Details Semiclassical scattering amplitudes of dressed gravitons Semiclassical scattering amplitudes of dressed gravitons

2004-08-14

arxiv.org/abs/hep-ph/0408168v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, no figures

Scientific paper

We consider effective action for the Einstein gravity and show that dressed mean fields are actual variables of the effective action. Kernels of this effective action expressed in terms of dressed effective fields are constituent parts of scattering amplitudes for gravitons. Possible applications to the graviton scattering and black hole formation are discussed at the semiclassical level. In particular, we consider graviton scattering in four dimensions based on the Lipatov effective action for quantum gravity, shock waves of particles moving on the brane in Randall-Sundrum scenario with fifth extra dimension, and Giddings' estimation of Froissart bound.

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