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Critical time scale of coarse-graining entropy production

Jang-il Sohn*

  • Department of Physics, Korea University, Seoul 02841, Korea

  • *physicon@korea.ac.kr

Phys. Rev. E 93, 042121 – Published 19 April, 2016

DOI: https://doi.org/10.1103/PhysRevE.93.042121

Abstract

We study coarse-grained entropy production in an asymmetric random walk system on a periodic one-dimensional lattice. In coarse-grained systems, the original dynamics are unavoidably destroyed, but the coarse-grained entropy production is not hidden below the critical time-scale separation. The hidden entropy production is rapidly increasing near the critical time-scale separation.

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