Entropy and specific heat for open systems in steady states

Details Entropy and specific heat for open systems in steady states Entropy and specific heat for open systems in steady states

2010-01-27

arxiv.org/abs/1001.4844v1

Physics

Quantum Physics

4 pages, 7 figures

Scientific paper

The fundamental assumption of statistical mechanics is that the system is equally likely in any of the accessible microstates. Based on this assumption, the Boltzmann distribution is derived and the full theory of statistical thermodynamics can be built. In this paper, we show that the Boltzmann distribution in general can not describe the steady state of open system. Based on the effective Hamiltonian approach, we calculate the specific heat, the free energy and the entropy for an open system in steady states. Examples are illustrated and discussed.

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