Scattering in an environment
High Energy Physics - Theory
2013-05-30 v2
Abstract
The cross section of elastic electron-proton scattering taking place in an electron gas is calculated within the Closed Time Path method. It is found to be the sum of two terms, one being the expression in the vacuum except that it involves dressing due to the electron gas. The other term is due to the scattering particles-electron gas entanglement. This term dominates the usual one when the exchange energy is in the vicinity of the Fermi energy. Furthermore it makes the trajectories of the colliding particles more consistent and the collision more irreversible, rendering the scattering more classical in this regime.
Cite
@article{arxiv.1110.2128,
title = {Scattering in an environment},
author = {Janos Polonyi and Karima Zazoua},
journal= {arXiv preprint arXiv:1110.2128},
year = {2013}
}
Comments
final version to appear in Phys. Rev. D