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Article

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2002

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/18807

Disordered backgammon model

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http://dx.doi.org/10.1103/PhysRevE.65.056125

Abstract

In this paper we consider an exactly solvable model that displays glassy behavior at zero temperature due to entropic barriers. The new ingredient of the model is the existence of different energy scales or modes associated with different relaxational time scales. Low-temperature relaxation takes place by partial equilibration of successive lower-energy modes. An adiabatic scaling solution, defined in terms of a threshold energy scale e*, is proposed. For such a solution, modes with energy ee* are equilibrated at the bath temperature, modes with ee* remain out of equilibrium, and relaxation occurs in the neighborhood of the threshold e~e*. The model is presented as a toy example to investigate the conditions related to the existence of an effective temperature in glassy systems and its possible dependence on the energy sector is probed by the corresponding observable.

Subject

Física estadística, Sistemes no lineals, Cristal·lografia

Subject (English)

Statistical physics, Nonlinear systems, Crystallography

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

LEUZZI, Luca and RITORT FARRAN, Fèlix. Disordered backgammon model. Physical Review E. 2002. Vol. 65, num. 5, pags. 056125-1-056125-18. ISSN 1063-651X. [consulted: 15 of August of 2026]. Available at: https://hdl.handle.net/2445/18807

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