Static and dynamic glass-glass transitions: a mean-field study

TL;DR

This paper reviews mean-field glass models, analyzing their phase diagrams and dynamics, highlighting glass-to-glass transitions and the emergence of Johari-Goldstein processes as collective reorganizations.

Contribution

It provides a comprehensive mean-field analysis of glass models, revealing new insights into glass-to-glass transitions and dynamic processes.

Findings

Identification of glass-to-glass transition lines in the phase diagram

Discussion of Johari-Goldstein processes as collective reorganizations

Analysis of relaxation time scales and their implications

Abstract

The behavior of a family of mean-field glass models is reviewed. The models are analyzed by means of a Langevin-based approach to the dynamics and a Replica theory computation of the thermodynamics. We focus on the phase diagram of a particular model case, where glass-to-glass transitions occur between phases with a different number of characteristic time-scales for the relaxation processes. The appearence of Johari-Goldstein processes as collective reorganizations of sets of fast processes is discussed.