Logarithmic critical slowing down in complex systems: from statics to dynamics
arXiv:2403.07565 · doi:10.1103/PhysRevB.109.174211
Abstract
We consider second-order phase transitions in which the order parameter is a replicated overlap matrix. We focus on a tricritical point that occurs in a variety of mean-field models and that, more generically, describes higher order liquid-liquid or liquid-glass transitions. We show that the static replicated theory implies slowing down with a logarithmic decay in time. The dynamical equations turn out to be those predicted by schematic Mode Coupling Theory for supercooled viscous liquids at a singularity, where the parameter exponent is . We obtain a quantitative expression for the parameter of the logarithmic decay in terms of cumulants of the overlap, which are physically observable in experiments or numerical simulations.
arXiv comment22 pages, 2 figures
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