Abstract :
[en] The fluctuation relation, a milestone of modern thermodynamics, is only established when a set of fundamental currents can be measured. Here we prove that it also holds for systems with hidden transitions if observations are carried "at their own beat," that is, by stopping the experiment after a fixed number of visible transitions, rather than the elapse of an external clock time. This suggests that thermodynamic symmetries are more resistant to the loss of information when described in the space of transitions.
Funding text :
We thank Emanuele Penocchio for helping out with the introduction, Gianmaria Falasco for suggesting the connection of the survival matrix to large deviations, Danilo Forastiere for sharing ideas, Pedro Portugal for helping with computational resources, and Michela Bernini for the illustration in Fig. . P.E.H. thanks Massimiliano Esposito for hospitality in his group. The research was supported by the National Research Fund Luxembourg (Project CORE ThermoComp No. C17/MS/11696700), by the European Research Council, Project NanoThermo (ERC-2015-CoG Agreement No. 681456), and by Grants No. 2017/24567-0 and No. 2020/03708-8, São Paulo Research Foundation (FAPESP).
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