Carrying out explicitly the computation in a paradigmatic model of non-interacting systems, the Gaussian model, we show the existence of a singular point in the probability distribution P(M) of an extensive variable M. Interpreting P(M) as a thermodynamic potential of a dual system obtained from the original one by applying a constraint, we discuss how the non-analytical point of P(M) is the counterpart of a phase-transition in the companion system. We show the generality of such mechanism by considering both the system in equilibrium or in non-equilibrium state following a temperature quench.
Titolo: | Singular behavior of fluctuations in a relaxation process | |
Autori: | ||
Data di pubblicazione: | 2015 | |
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Handle: | http://hdl.handle.net/11386/4614657 | |
Appare nelle tipologie: | 1.1.1 Articolo su rivista con DOI |
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