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- W4254625073 abstract "A basic difficulty in measuring and computing the energy exchange between a system, its thermal environment, and time‐dependent external fields is the divergence of energy flows in the quasistatic limit. This problem is overcome by properly constructing their finite or ‘excess’ parts [1,2]. It has been recently proposed that for weakly equilibrium processes the excess heat (approximately) satisfies thermodynamic relations extending those for equilibrium processes, with a generalized entropy function [2]. In order to systematically analyze these propositions, we first derive nonperturbative formulas for quasistatic excess path quantities in markovian systems, and we propose a method how to possibly access them experimentally. By extending the method of [3], we perturbatively construct the excess work and heat for both over‐ and under‐damped diffusions driven by small nongradient forces. It is shown that the excess heat always satisfies the (generalized) Clausius relation up to the first order in nonequilibrium driving, whereas this is no longer true in general when beyond the leading order [4]. In the latter case, the excess path quantities do not derive from (generalized) thermodynamic potentials but they require new nonpotential corrections, as demonstrated numerically. We also discuss the possible meaning of those new corrections." @default.
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- W4254625073 date "2011-01-01" @default.
- W4254625073 modified "2023-09-28" @default.
- W4254625073 title "Quasistatic heat processes in mesoscopic non-equilibrium systems" @default.
- W4254625073 doi "https://doi.org/10.1063/1.3577684" @default.
- W4254625073 hasPublicationYear "2011" @default.
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