Equilibration in an Interacting Field Theory

Details Equilibration in an Interacting Field Theory Equilibration in an Interacting Field Theory

2001-03-09

arxiv.org/abs/hep-ph/0103098v1

Can.J.Phys. 80 (2002) 987-993

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures, uses revtex4

Scientific paper

10.1139/p02-065

We use a combination of perturbation theory and numerical techniques to study the equilibration of two interacting fields which are initially at thermal equilibrium at different temperatures. Using standard rules of quantum field theory, we examine the master equations that describe the time evolution of the distribution functions for the two coupled systems. By making a few reasonable assumptions we reduce the resulting coupled integral/differential equations to a pair of differential equations that can be solved numerically. Our results show with good accuracy how these coupled systems approach a common equilibrium temperature.

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