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1er juin 2017: 1 événement

  • Séminaires Invités

    Jeudi 1er juin 14:00-15:30 - Silvio FRANZ - LPTMS, CNRS, Univ. Paris-Sud, Universite' Paris-Saclay, 91405 Orsay

    Mean-field avalanches in jammed spheres

    Résumé : Disordered systems are characterized by the existence of many sample-dependent local-energy minima that cause a step-wise response when the system is perturbed. In this talk I will illustrate an approach based on elementary probabilistic methods to compute the complete probability distribution of the jumps (static avalanches) in the response of mean-field systems described by replica symmetry breaking ; there is a precise condition for having a power-law behavior in the distribution of avalanches caused by small perturbations, our predictions are in remarkable agreement with simulations of three-dimensional systems of soft spheres, either at jamming or at slightly higher densities.
    Ref : SF and S. Spigler PHYSICAL REVIEW E 95, 022139 (2017)



    contact : Giacomo Gradenigo

    Lieu : LIPhy, conference room - 140 Avenue de la Physique 38402 Saint Martin d’Hères

    En savoir plus : Séminaires Invités