Abstract :
[en] Near equilibrium, where all currents of a system vanish on average, the fluctuation-dissipation relation
(FDR) connects a current’s spontaneous fluctuations with its response to perturbations of the conjugate
thermodynamic force. Out of equilibrium, fluctuation-response relations generally involve additional
nondissipative contributions. Here, in the framework of stochastic thermodynamics, we show that an
equilibriumlike FDR holds for internally equilibrated currents, if the perturbing conjugate force only affects
the microscopic transitions that contribute to the current. We discuss the physical requirements for the
validity of our result and apply it to nanosized electronic devices.
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