Quantum corrections to Boltzmann equations
High Energy Physics - Phenomenology
2017-08-23 v1
Abstract
Because of IR (pinch) singularities a resummation is necessary in non-equilibrium field theories, that can be performed by using Kadanoff--Baym equations. Taking Landau prescription correctly into account, Kadanoff--Baym equations reduce to Boltzmann equations only in a restricted kinematical range; in other cases a new equation (the former constraint equation) has to be considered. In relaxation time approximation this new equation results in the shifting and smearing of multiparticle thresholds.
Cite
@article{arxiv.hep-ph/0301158,
title = {Quantum corrections to Boltzmann equations},
author = {A. Jakovac},
journal= {arXiv preprint arXiv:hep-ph/0301158},
year = {2017}
}
Comments
5 pages, Latex, 1 eps figure. To appear in the proceedings of Strong and Electroweak Matter (SEWM 2002), Heidelberg, Germany, 2-5 Oct 2002