Extending the generalized Chaplygin gas model by using geometrothermodynamics
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 thermo...
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| creator | Aviles, Alejandro Bastarrachea-Almodovar, Aztlán Campuzano, Lorena Quevedo, Hernando |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.1203.4637 |
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| source | Freely Accessible Journals; arXiv.org |
| subjects | Astronomical models Chaplygin gas Computational fluid dynamics Cosmology Physics - Cosmology and Nongalactic Astrophysics Physics - General Relativity and Quantum Cosmology Universe |
| title | Extending the generalized Chaplygin gas model by using geometrothermodynamics |
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