Chemical equilibration of U(1) charged particles in a thermal environment

Details Chemical equilibration of U(1) charged particles in a thermal environment Chemical equilibration of U(1) charged particles in a thermal environment

2001-11-16

arxiv.org/abs/hep-ph/0111214v2

Nucl.Phys. A702 (2002) 326-335

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk given at Statistical QCD, a Conference on Matter under Extreme Conditions, Bielefeld, Germany, August 26-30,2001

Scientific paper

10.1016/S0375-9474(02)00719-4

We discuss chemical equilibration of particles carrying non-vanishing quantum numbers related with U(1) internal symmetry. We construct the transport equation for the time evolution of particle multiplicities and their probability functions. The solution of these equations is obtained in different limiting cases. It is argued that a U(1) charged particles, dependent on thermal conditions inside a fireball, approaches different equilibrium limits. The differences between kinetics of abundantly and rarely produced particles are explained.

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