Gauge invariant Boltzmann equation and the fluid limit
General Relativity and Quantum Cosmology
2008-11-26 v3 Astrophysics
Abstract
This article investigates the collisionless Boltzmann equation up to second order in the cosmological perturbations. It describes the gauge dependence of the distribution function and the construction of a gauge invariant distribution function and brightness, and then derives the gauge invariant fluid limit.
Keywords
Cite
@article{arxiv.0706.4383,
title = {Gauge invariant Boltzmann equation and the fluid limit},
author = {Cyril Pitrou},
journal= {arXiv preprint arXiv:0706.4383},
year = {2008}
}