Extending the generalized Chaplygin gas model by using geometrothermodynamics
General Relativity and Quantum Cosmology
2013-05-30 v2 Cosmology and Nongalactic Astrophysics
Abstract
We use the formalism of geometrothermodynamics (GTD) to derive fundamental thermodynamic equations that are used to construct general relativistic cosmological models. In particular, we show that the simplest possible fundamental equation, which corresponds in GTD to a system with no internal thermodynamic interaction, describes the different fluids of the standard model of cosmology. In addition, a particular fundamental equation with internal thermodynamic interaction is shown to generate a new cosmological model that correctly describes the dark sector of the Universe and contains as a special case the generalized Chaplygin gas model.
Cite
@article{arxiv.1203.4637,
title = {Extending the generalized Chaplygin gas model by using geometrothermodynamics},
author = {Alejandro Aviles and Aztlán Bastarrachea-Almodovar and Lorena Campuzano and Hernando Quevedo},
journal= {arXiv preprint arXiv:1203.4637},
year = {2013}
}
Comments
18 pages, 7 figures. Section added: Basics aspects of geometrothermodynamics