Equilibration in phi^4 theory in 3+1 dimensions
High Energy Physics - Phenomenology
2009-11-11 v2
Abstract
The process of equilibration in phi^4 theory is investigated for a homogeneous system in 3+1 dimensions and a variety of out-of-equilibrium initial conditions, both in the symmetric and broken phase, by means of the 2PI effective action. Two Phi-derivable approximations including scattering effects are used: the two-loop and the ``basketball'', the latter corresponding to the truncation of the 2PI effective action at O(lambda^2). The approach to equilibrium, as well as the kinetic and chemical equilibration is investigated.
Keywords
Cite
@article{arxiv.hep-ph/0503287,
title = {Equilibration in phi^4 theory in 3+1 dimensions},
author = {Alejandro Arrizabalaga and Jan Smit and Anders Tranberg},
journal= {arXiv preprint arXiv:hep-ph/0503287},
year = {2009}
}
Comments
32 pages, 14 figures, uses axodraw, minor corrections added