On the Validity of Entropy Production Principles for Linear Electrical Circuits |
| |
Authors: | Stijn Bruers Christian Maes Karel Netočný |
| |
Affiliation: | (1) Instituut voor Theoretische Fysica, K.U. Leuven, Leuven, Belgium;(2) Institute of Physics AS CR, Prague, Czech Republic |
| |
Abstract: | We explain the (non-)validity of close-to-equilibrium entropy production principles in the context of linear electrical circuits. Both the minimum and the maximum entropy production principles are understood within dynamical fluctuation theory. The starting point are Langevin equations obtained by combining Kirchoff’s laws with a Johnson-Nyquist noise at each dissipative element in the circuit. The main observation is that the fluctuation functional for time averages, that can be read off from the path-space action, is in first order around equilibrium given by an entropy production rate. That allows to understand beyond the schemes of irreversible thermodynamics (1) the validity of the least dissipation, the minimum entropy production, and the maximum entropy production principles close to equilibrium; (2) the role of the observables’ parity under time-reversal and, in particular, the origin of Landauer’s counterexample (1975) from the fact that the fluctuating observable there is odd under time-reversal; (3) the critical remark of Jaynes (1980) concerning the apparent inappropriateness of entropy production principles in temperature-inhomogeneous circuits. |
| |
Keywords: | Entropy production Variational principles Nonequilibrium fluctuations |
本文献已被 SpringerLink 等数据库收录! |
|