Thermodynamics of Chaplygin gas

Details Thermodynamics of Chaplygin gas Thermodynamics of Chaplygin gas

2008-12-02

arxiv.org/abs/0812.0618v2

Astrophys.Space Sci.335:561-564,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, 4 figures, version "Accepted for publication in Astrophysics & Space Science"

Scientific paper

10.1007/s10509-011-0743-5

We clarify thermodynamics of the Chaplygin gas by introducing the integrability condition. All thermal quantities are derived as functions of either volume or temperature. Importantly, we find a new general equation of state, describing the Chaplygin gas completely. We confirm that the Chaplygin gas could show a unified picture of dark matter and energy which cools down through the universe expansion without any critical point (phase transition).

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