{"id":1248,"date":"2022-02-14T20:59:24","date_gmt":"2022-02-14T18:59:24","guid":{"rendered":"https:\/\/webs.uab.cat\/giq\/seminar\/what-can-thermodynamics-tell-us-about-fluctuations-in-nonequilibrium-steady-states\/"},"modified":"2022-02-14T20:59:24","modified_gmt":"2022-02-14T18:59:24","slug":"what-can-thermodynamics-tell-us-about-fluctuations-in-nonequilibrium-steady-states","status":"publish","type":"seminar","link":"https:\/\/webs.uab.cat\/giq\/seminar\/what-can-thermodynamics-tell-us-about-fluctuations-in-nonequilibrium-steady-states\/","title":{"rendered":"What can thermodynamics tell us about fluctuations in nonequilibrium steady states?"},"content":{"rendered":"<p>Fluctuations in an open system at equilibrium are controlled by the system energy (or free energy). But can one relate the fluctuations of an open system in a nonequilibrium steady state (NESS) to its energetics? Using stochastic thermodynamics for open systems which display a macroscopic limit (e.g. chemical reaction networks, nonlinear electric circuits and Potts models), I will show that macroscopic fluctuations in a NESS (i.e. the rate function of the NESS probability distribution) can be bounded using the macroscopic entropy production [1]. I will also describe a novel linear response regime at the level of NESS rate functions [2] which saturates the bound. Finally, I will consider macroscopic fluctuations in a mean field Ising model quenched from an ordered to a disorder phase and show that they undergo a dynamical phase transition which manifests as the appearance, after a critical time, of a kink in the rate function of the relaxing magnetization distribution [3].<br aria-hidden=\"true\" \/><br \/>\n<br aria-hidden=\"true\" \/><br \/>\n[1] N. Freitas and M. Esposito, \u00abEmergent second law for non-equilibrium steady states\u00bb, arXiv:2109.04906.<br aria-hidden=\"true\" \/><br \/>\n[2] N. Freitas, G. Falasco and M. Esposito, \u00abLinear response in large deviations theory: A method to compute non-equilibrium distributions\u00bb, New J. Phys. 23, 093003 (2021)<br aria-hidden=\"true\" \/><br \/>\n[3] J. Meibohm and M. Esposito, Finite-time dynamical phase transition in non-equilibrium relaxation, arXiv:2111.07681.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fluctuations in an open system at equilibrium are controlled by the system energy (or free energy). But can one relate the fluctuations of an open system in a nonequilibrium steady state (NESS) to its energetics? Using stochastic thermodynamics for open systems which display a macroscopic limit (e.g. chemical reaction networks, nonlinear electric circuits and Potts [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":0,"template":"","class_list":["post-1248","seminar","type-seminar","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar\/1248","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar"}],"about":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/types\/seminar"}],"author":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/users\/20"}],"wp:attachment":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/media?parent=1248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}