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Title: Fluctuation theorem for entropy production of a partial system in the weak-coupling limit
Authors: Gupta, Deepak
Sabhapandit, Sanjib
Keywords: 12 months embargo accepted manuscript
Issue Date: Sep-2016
Citation: Europhysics Letters, 2016, Vol.115, 6003
Abstract: Small systems in contact with a heat bath evolve by stochastic dynamics. Here we show that, when one such small system is weakly coupled to another one, it is possible to infer the presence of such weak coupling by observing the violation of the steady-state fluctuation theorem for the partial entropy production of the observed system. We give a general mechanism due to which the violation of the fluctuation theorem can be significant, even for weak coupling. We analytically demonstrate on a realistic model system that this mechanism can be realized by applying an external random force to the system. In other words, we find a new fluctuation theorem for the entropy production of a partial system, in the limit of weak coupling.
Description: Restricted Access. An open-access version is available at (one of the alternative locations)
ISSN: 0295-5075
1286-4854 (Online).
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Copyright: 2016 Europhysics Letters Association: (EPLA)
Appears in Collections:Research Papers (TP)

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