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Title: Disordered backgammon model
Author: Leuzzi, Luca, 1972-
Ritort Farran, Fèlix
Keywords: Física estadística
Sistemes no lineals
Statistical physics
Nonlinear systems
Issue Date: 2002
Publisher: The American Physical Society
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.
Note: Reproducció del document publicat a:
It is part of: Physical Review E, 2002, vol. 65, núm. 5, p. 056125-1-056125-18
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ISSN: 1063-651X
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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