2005/03/31 by A. Arrizabalaga, Alejandro Arrizabalaga, Jan Smit +1
Physics and Astronomy · #Quantum, superfluid, helium dynamics #Spectroscopy and Quantum Chemical Studies #Theoretical and Computational Physics #hep-ph
paper · pdf · doi:10.1103/physrevd.72.025014
published as Phys.Rev. D72 (2005) 025014 · 32 pages, 14 figures, uses axodraw, minor corrections added
openalex publication_date 2005/07/28 · arxiv created 2005/12/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The process of equilibration in \ensuremathφ4 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 \ensuremathΦ-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(\ensuremathλ2). The approach to equilibrium, as well as the kinetic and chemical equilibration is investigated.