Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-03-17
J. Phys. A_ Math. Gen. 37 (2004) 4955-4975
Physics
Condensed Matter
Statistical Mechanics
24 pages, 4 figures, IOP macro style, accepted on J. Phys. A: Math. Gen
Scientific paper
10.1088/0305-4470/37/18/004
In the present paper we introduce generalized kinetic equations describing the dynamics of a system of interacting gas and photons obeying to a very general statistics. In the space homogeneous case we study the equilibrium state of the system and investigate its stability by means of Lyapounov's theory. Two physically relevant situations are discussed in details: photons in a background gas and atoms in a background radiation. After having dropped the statistics generalization for atoms but keeping the statistics generalization for photons, in the zero order Chapmann-Enskog approximation, we present two numerical simulations where the system, initially at equilibrium, is perturbed by an external isotropic Dirac's delta and by a constant source of photons.
Rossani A.
Scarfone Antonio Maria
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