Scattering in an environment

Details Scattering in an environment Scattering in an environment

2011-10-10

arxiv.org/abs/1110.2128v2

Physics

High Energy Physics

High Energy Physics - Theory

final version to appear in Phys. Rev. D

Scientific paper

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.

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