# Thermodynamics of diffusive DM/DE systems

@article{Haba2016ThermodynamicsOD,
title={Thermodynamics of diffusive DM/DE systems},
author={Zbigniew Haba},
journal={General Relativity and Gravitation},
year={2016},
volume={49},
pages={1-21}
}
• Zbigniew Haba
• Published 18 December 2016
• Physics
• General Relativity and Gravitation
We discuss the energy density, temperature and entropy of dark matter (DM) and dark energy (DE) as functions of the scale factor a in an expanding universe. In a model of non-interacting dark components we repeat a derivation from thermodynamics of the well-known relations between the energy density, entropy and temperature. In particular, the entropy is constant as a consequence of the energy conservation. We consider a model of a DM/DE interaction where the DM energy density increase is…
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