Macroscopic fluctuations theory of aerogel dynamics

Abstract : We consider extensive deterministic dynamics made of $N$ particles modeling aerogels under a macroscopic fluctuation theory description. By using a stochastic model describing those dynamics after a diffusive rescaling, we show that the functional giving the exponential decay in $N$ of the probability of observing a given energy and current profile is not strictly convex as a function of the current. This behaviour is caused by the fact that the energy current is carried by particles which may have arbitrary low speed with sufficiently large probability.
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Contributeur : Lorenzo Zambotti <>
Soumis le : mercredi 21 juillet 2010 - 17:59:27
Dernière modification le : mercredi 21 mars 2018 - 18:56:48

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  • HAL Id : hal-00504909, version 1
  • ARXIV : 1007.3080



Raphael Lefevere, Mauro Mariani, Lorenzo Zambotti. Macroscopic fluctuations theory of aerogel dynamics. 2010. 〈hal-00504909〉



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