Isolated Non-Equilibrium Systems in Contact

Details Isolated Non-Equilibrium Systems in Contact Isolated Non-Equilibrium Systems in Contact

2007-03-01

arxiv.org/abs/cond-mat/0703040v2

Phys. Rev. E 76, 030101(R) (2007)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevE.76.030101

We investigate a solvable model for energy conserving non-equilibrium steady states. The time-reversal asymmetry of the dynamics leads to the violation of detailed balance and to ergodicity breaking, as manifested by the presence of dynamically inaccessible states. Two such systems in contact do not reach the same effective temperature if standard definitions are used. However, we identify the effective temperature that controls energy flow. Although this operational temperature does reach a common value upon contact, the total entropy of the joint system can decrease.

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