Frequency-Dependent Response near the Glass Transition: A Theoretical Model

We propose a simple dynamical model for a glass transition. The dynamics is described by a Langevin equation in a piecewise parabolic free energy landscape, modulated by a temperature dependent overall curvature. The zero-curvature point marks a transition to a phase with broken ergodicity which we...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 1998-05
Main Authors: Ignatiev, Michael O, Chakraborty, Bulbul
Format: Article
Language:English
Subjects:
Curvature
Free energy
Frequency response
Glass
Phase transitions
Temperature dependence
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We propose a simple dynamical model for a glass transition. The dynamics is described by a Langevin equation in a piecewise parabolic free energy landscape, modulated by a temperature dependent overall curvature. The zero-curvature point marks a transition to a phase with broken ergodicity which we identify as the glass transition. Our analysis shows a connection between the high and low frequency response of systems approaching this transition.
ISSN:2331-8422