title: Critical time scale of coarse-graining entropy production.
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.
authors.affiliation: Department of Physics, Korea University, Seoul 02841, Korea.
authors.forename: Jang-Il
authors.initials: JI
authors.lastname: Sohn