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arXiv · 1704.08036

Spatially-Flat Robertson-Walker models with combined CDM and stiff matter sources and the corresponding thermodynamics

Marina-Aura Dariescu·Denisa Andreea Mihu·Ciprian Dariescu
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Abstract

In the present paper, we are considering a spatially-flat Friedmann-Robertson-Walker cosmological model, fueled with stiff matter and dust, treated as non-interacting ideal fluid sources. By solving the corresponding Friedmann equation with a non-zero cosmological constant, we are deriving the scale function and the fundamental cosmological parameters. Within a thermodynamic approach, the general form of the Equation of State is obtained, together with the explicit dependence of the energy density and pressure on temperature.

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Marina-Aura Dariescu, Denisa Andreea Mihu, Ciprian Dariescu. 2017-04-26. Spatially-Flat Robertson-Walker models with combined CDM and stiff matter sources and the corresponding thermodynamics. https://arxiv.org/abs/1704.08036

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