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DY: Fachverband Dynamik und Statistische Physik
DY 9: Statistical Physics far from Thermal Equilibrium
DY 9.6: Vortrag
Montag, 17. März 2025, 16:45–17:00, H47
Dissipation bounds precision of current response to kinetic perturbations — •Krzysztof Ptaszyński1,2, Timur Aslyamov1, and Massimiliano Esposito1 — 1Department of Physics and Materials Science, University of Luxembourg, L-1511 Luxembourg City, Luxembourg — 2Institute of Molecular Physics, Polish Academy of Sciences, Mariana Smoluchowskiego 17, 60-179 Poznań, Poland
The precision of currents in Markov networks is bounded by dissipation via the so-called thermodynamic uncertainty relation (TUR). We conjecture [1] and prove [2] a similar inequality that bounds the precision of the static current response to perturbations of kinetic barriers. Perturbations of such type, which affect only the system kinetics but not the thermodynamic forces, are highly important in biochemistry and nanoelectronics. Our inequality cannot be derived from the standard TUR, but rather implies it and provides an even tighter bound for dissipation. We also provide a procedure for obtaining the optimal response precision for a given model.
[1] Phys. Rev. Lett. 133, 227101 (2024)
[2] arXiv:2410.17140
Keywords: thermodynamic uncertainty relation; linear response theory; stochastic thermodynamics; entropy production