2010/11/30 by Akihiro Nishiyama, Akira Ohnishi · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #High-Energy Particle Collisions Research #hep-ph #nucl-th
paper · pdf · doi:10.1143/ptp.125.775
published as Prog.Theor.Phys.125:775-793,2011 · 19 pages, 7 figures
arxiv created 2011/02/16 · openalex publication_date 2011/04/01 · arxiv updated 2011/07/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Entropy production in non-Abelian gauge theory is discussed in the limit of vanishing classical fields. On the basis of the Kadanoff-Baym equation with the leading order self-energy in the temporal axial gauge, the kinetic entropy is introduced and is proven to increase for a given self-energy. Numerical simulation of the Kadanoff-Baym equation for the non-Abelian gauge theory is performed in 2+1 dimensions. Starting from anisotropic distribution in momentum space, relaxation to isotropic distribution proceeds and the entropy is produced due to off-shell scattering of massive transverse polarization mode as expected from the proof of the H-theorem.