Reconstructing the expansion history of the Universe with a one-fluid approach
General Relativity and Quantum Cosmology
2011-04-26 v1
Abstract
Assuming that the Universe is filled by one single fluid, we present in the context of General Relativity a possible explanation for the acceleration of the Universe. We use ordinary thermodynamics and the fact that small matter perturbations barely propagate in our Universe, to derive a general solution for a single fluid in which the speed of sound vanishes. We find a model that contains CDM as a special case, and is compatible with current observational data.
Keywords
Cite
@article{arxiv.1104.4758,
title = {Reconstructing the expansion history of the Universe with a one-fluid approach},
author = {Orlando Luongo and Hernando Quevedo},
journal= {arXiv preprint arXiv:1104.4758},
year = {2011}
}
Comments
revtex4 style, 3 figures