Starts 22 Mar 2022 11:00
Ends 22 Mar 2022 12:00
Central European Time
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CMSP Seminar (Joint ICTP/SISSA Statistical Physics): A new critical phase in jammed models
Hybrid seminar
room 128, SISSA (via Bonomea 265) + Zoom
Antonio Sclocchi
(Lausanne)
(Lausanne)
Abstract:
The jamming transition is a zero-temperature phenomenon related to disordered and glassy systems. Its critical behaviour has been characterized in the solution of the hard sphere model in infinite spatial dimensions, corresponding to a mean-field theory. In this talk, we consider soft-spheres with a linear repulsive potential and their mean-field model, i.e. the perceptron. We show that the jamming critical behaviour gets extended from the jamming point to an entire phase. We characterize this self-organized critical and marginally stable phase and we show the emergence of a symmetry in the critical exponents. In the last part of the talk, we will discuss jamming criticality in optimization problems and machine learning.