Isolated nonequilibrium systems in contact

Yair Shokef, Gal Shulkind, Dov Levine

Research output: Contribution to journalArticlepeer-review


We investigate a solvable model for energy-conserving nonequilibrium 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.

Original languageEnglish
Article number030101
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Issue number3
StatePublished - 5 Sep 2007
Externally publishedYes


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