Equilibrium and equilibration in a gluon plasma with improved matrix elements

Abstract

The hot and dense matter created in the early stage of a relativistic heavy ion collision is composed mainly of gluons. Radiative processes can play an important role for the thermalization of such partonic systems. The simplest parton number changing processes are commonly described by the Gunion-Bertsch formula. We show that the cross section from the exact matrix element for the lowest order radiative process could be significantly smaller than that based on the Gunion-Bertsch formula. In light of this, we discuss the role of radiative processes on the equilibrium and equilibration of a gluon plasma.

Presented at the 25th International Nuclear Physics Conference (INPC 2013), Florence, Italy, 2-7 June 2013

References in corpus (8)

• Dissipative Dynamics of Highly Anisotropic Systems
• Dissipative relativistic fluid dynamics: a new way to derive the equations of motion from kinetic theory
• Pressure isotropization in high energy heavy ion collisions
• Anomalous Viscosity of an Expanding Quark-Gluon Plasma
• Shear Viscosity in a Gluon Gas
• The applicability of causal dissipative hydrodynamics to relativistic heavy ion collisions
• Equation of state of the hot dense matter in a multi-phase transport model
• Parton radiative processes and pressure isotropization in relativistic heavy ion collisions

Cited by in corpus (1)

• Work distribution of an expanding gas and transverse energy production in relativistic heavy ion collisions