Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2000-05-24
Physics
Condensed Matter
Disordered Systems and Neural Networks
Proceedings of the Conference "Unifying Concepts in Glass Physics", ICTP, Trieste, 15 - 18 September 1999
Scientific paper
10.1088/0953-8984/12/29/326
A picture for thermodynamics of the glassy state is introduced. It assumes that one extra parameter, the effective temperature, is needed to describe the glassy state. This explains the classical paradoxes concerning the Ehrenfest relations and the Prigogine-Defay ratio. As a second part, the approach connects the response of macroscopic observables to a field change with their temporal fluctuations, and with the fluctuation-dissipation relation, in a generalized non-equilibrium way.
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