Solvable model for the standard folklore of the glassy state

Details Solvable model for the standard folklore of the glassy state Solvable model for the standard folklore of the glassy state

1999-11-04

arxiv.org/abs/cond-mat/9911052v1

Physics

Condensed Matter

Statistical Mechanics

4 pages revtex

Scientific paper

A model system with fast and slow processes is introduced. After integrating out the fast ones, the considered dynamics of the slow variables is exactly solvable. In statics the system undergoes a Kauzmann transition to a glassy state. The relaxation time obeys a generalized Vogel-Fulcher-Tammann-Hesse law. The aging dynamics on the approach to and below the Kauzmann temperature is analyzed; it has logarithmic behavior. The structure of the results could be general, as they satisfy laws of thermodynamics far from equilibrium. The original VFTH law is on the border-line between the regime where only the effective temperature of the slow modes is needed, and the regime where also an effective field occurs. The production rates of entropy and heat are calculated.

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