Universality of efficiency at maximum power
Massimiliano Esposito, Katja Lindenberg, Christian Van den Broeck
TL;DR
This paper demonstrates that under certain conditions, the efficiency at maximum power of thermo-chemical engines exhibits universal behavior up to quadratic deviations from equilibrium, supported by a maser model example.
Contribution
It establishes the universality of efficiency at maximum power for systems with strong coupling and symmetry, extending understanding of thermodynamic performance.
Findings
Efficiency at maximum power shows universal quadratic behavior near equilibrium.
Strong coupling and symmetry conditions are key for this universality.
A maser model confirms the theoretical predictions.
Abstract
We investigate the efficiency of power generation by thermo-chemical engines. For strong coupling between the particle and heat flows and in the presence of a left-right symmetry in the system, we demonstrate that the efficiency at maximum power displays universality up to quadratic order in the deviation from equilibrium. A maser model is presented to illustrate our argument.
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