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This paper is devoted to the study of the probability distribution of fluctuations of physical observables in a thermodynamical system, either in equilibrium or out of equilibrium. Interestingly, even relatively simple systems, exhibit a complex pattern of fluctuations, characterized by non-analyticities of their probability distribution. Singularities in thermodynamics are known to be associated to phase transitions. In the problem at hand, the non-analyticities of the probability distribution can be interpreted as due to a peculiar phase transition occurring at the level of fluctuating quantities.
Highlights 2013: A collection of highlights showcasing some of the excellent papers published in 2013
Journal of Physics A: Mathematical and Theoretical
CORBERI Federico
GONNELLA Giuseppe
PISCITELLI Antonio
ZANNETTI Marco
2014
Dettaglio
This paper addresses the problem of percolation effects in phase ordering kinetics. Phase ordering is the phenomenon whereby a initially disordered binary systems evolve towards an ordered state. Typical examples are the formation of magnetic domains in a material quenched below the Curie temperature, or the demixing of a binary liquid -- oil and vinegar to mention a familiar one. It has been recently discovered that the largest domain present in the system at a given observation time (magnetic domain or oil bubble in the previous examples) exhibits the fractal properties of random percolation.
Editor’s Choice Article 2014 - Highlights 2014
Europhysics Letters
Blanchard Thibault
CORBERI Federico
Cugliandolo L.F.
Picco M.
2014
Dettaglio