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DY: Fachverband Dynamik und Statistische Physik
DY 23: Stochastic Thermodynamics
DY 23.4: Vortrag
Mittwoch, 20. März 2024, 10:15–10:30, BH-N 128
Thermodynamic cost for precision of general counting observables — •Patrick Pietzonka1,2 and Francesco Coghi3 — 1School of Physics and Astronomy, University of Edinburgh, United Kingdom — 2Max Planck Institute for the Physics of Complex Systems, Dresden, Germany — 3Nordita, KTH Royal Institute of Technology and Stockholm University, Sweden
We analytically derive universal bounds that describe the trade-off between thermodynamic cost and precision in a sequence of events related to some internal changes of an otherwise hidden physical system. The precision is quantified by the fluctuations in either the number of events counted over time or the times between successive events. Our results are valid for the same broad class of nonequilibrium driven systems considered by the thermodynamic uncertainty relation, but they extend to both time-symmetric and asymmetric observables. We show how optimal precision saturating the bounds can be achieved. For waiting time fluctuations of asymmetric observables, a phase transition in the optimal configuration arises, where higher precision can be achieved by combining several signals.
Preprint: arXiv:2305.15392
Keywords: entropy production; stochastic thermodynamics; cost of precision; Markov networks