Dynamics of Relativistic Interacting Gases : from a Kinetic to a Fluid Description

Details Dynamics of Relativistic Interacting Gases : from a Kinetic to a Fluid Description Dynamics of Relativistic Interacting Gases : from a Kinetic to a Fluid Description

1998-01-30

arxiv.org/abs/gr-qc/9801108v1

Class.Quant.Grav. 15 (1998) 1063-1088

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Latex file, 28 pages, accepted for publication in Class. Quant. Grav

Scientific paper

10.1088/0264-9381/15/4/025

Starting from a microscopic approach, we develop a covariant formalism to describe a set of interacting gases. For that purpose, we model the collision term entering the Boltzmann equation for a class of interactions and then integrate this equation to obtain an effective macroscopic description. This formalism will be useful to study the cosmic microwave background non-perturbatively in inhomogeneous cosmologies. It should also be useful for the study of the dynamics of the early universe and can be applied, if one considers fluids of galaxies, to the study of structure formation.

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