Nonlinear diffusion of gluons
High Energy Physics - Phenomenology
2022-04-08 v2 Nuclear Theory
Abstract
It is proposed to consider the fast thermalization of gluons in relativistic heavy-ion collisions as a diffusion process in momentum space. Closed-form analytical solutions of a nonlinear boson diffusion equation (NBDE) with constant drift and diffusion coefficients v, D and boundary conditions at the singularity are derived. The time evolution towards local central temperatures T< 600 MeV through inelastic gluon scatterings in heavy-ion collisions is calculated for under- and overoccupied systems in the full momentum range. The results are consistent with QCD-based numerical calculations for gluon thermalization via inelastic gluon collisions.
Keywords
Cite
@article{arxiv.2108.01607,
title = {Nonlinear diffusion of gluons},
author = {Georg Wolschin},
journal= {arXiv preprint arXiv:2108.01607},
year = {2022}
}
Comments
14 pages, 6 figures; as published in PHYSICA A