Thermodynamics of Ideal Gas in Cosmology

Details Thermodynamics of Ideal Gas in Cosmology Thermodynamics of Ideal Gas in Cosmology

2007-08-22

arxiv.org/abs/0708.2962v3

Physics

General Physics

9 pages, no figure

Scientific paper

The equation of state and the state functions for the gravitational source are necessary conditions for solving cosmological model and stellar structure. The usual treatments are directly based on the laws of thermodynamics, and the physical meanings of some concepts are obscure. This letter show that, we can actually derive all explicit fundamental state functions for the ideal gas in the context of cosmology via rigorous dynamical and statistical calculation. These relations have clear physical meanings, and are valid in both non-relativistic and ultra-relativistic cases. Some features of the equation of state are important for a stable structure of a star with huge mass.

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