We propose anew method to compute the configurational entropy of glassy systems as a, function of the free energy of valleys at a given temperature, in the framework of the Stillinger and Weber approach. In this method, which we call free-energy inherent structures (FEIS) approach, valleys are represented by inherent structures that are statistically grouped according to their free-energy rather than the energy as is commonly done in the standard procedure. The FEIS method provides a further step toward a description of the relaxational behavior of glassy systems in terms of a free energy measure. It can be used to determine the character of the glass transition as well as the mode coupling and the Kauzmann temperatures. We illustrate the usefulness of the method by applying it to simple models of glasses and spin glasses.

A new method to compute the configurational entropy in glassy systems / COLUZZI BARTOCCIONI, Barbara; Crisanti, Andrea; Marinari, Vincenzo; F., Ritort; A., Rocco. - In: THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS. - ISSN 1434-6028. - STAMPA. - 32:4(2003), pp. 495-502. [10.1140/epjb/e2003-00117-4]

A new method to compute the configurational entropy in glassy systems

COLUZZI BARTOCCIONI, BARBARA;CRISANTI, Andrea;MARINARI, Vincenzo;
2003

Abstract

We propose anew method to compute the configurational entropy of glassy systems as a, function of the free energy of valleys at a given temperature, in the framework of the Stillinger and Weber approach. In this method, which we call free-energy inherent structures (FEIS) approach, valleys are represented by inherent structures that are statistically grouped according to their free-energy rather than the energy as is commonly done in the standard procedure. The FEIS method provides a further step toward a description of the relaxational behavior of glassy systems in terms of a free energy measure. It can be used to determine the character of the glass transition as well as the mode coupling and the Kauzmann temperatures. We illustrate the usefulness of the method by applying it to simple models of glasses and spin glasses.
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A new method to compute the configurational entropy in glassy systems / COLUZZI BARTOCCIONI, Barbara; Crisanti, Andrea; Marinari, Vincenzo; F., Ritort; A., Rocco. - In: THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS. - ISSN 1434-6028. - STAMPA. - 32:4(2003), pp. 495-502. [10.1140/epjb/e2003-00117-4]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/255568
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