Escape-Rate Formalism, Decay to Steady States, and Divergences in the Entropy-Production Rate |
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Authors: | Jürgen Vollmer László Mátyás Tamás Tél |
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Institution: | (1) Max–Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany;(2) Institute for Theoretical Physics, Eötvös University, P.O. Box 32, H-1518 Budapest, Hungary;(3) Max–Planck-Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, Germany |
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Abstract: | According to thermodynamics the irreversible entropy production of diffusive relaxation processes diverges at the boundary to the vacuum, i.e., to a state of vanishing particle density. By means of a multibaker map we point out that this divergence is not present in the spatially discrete dynamics, which brings forth the evolution equations of irreversible thermodynamics in the continuum limit. In addition, we show that the irreversible entropy production of relaxation towards a nonempty steady state is proportional to the decay rate of the thermodynamic system subjected to absorbing boundary conditions. This generalizes results of the escape rate formalism. |
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Keywords: | Entropy production deterministic chaos absorbing boundary condition escape-rate formalism multibaker maps |
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