Breather lattices as pseudospin glasses

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We study the thermodynamics of discrete breathers by transforming a lattice of weakly coupled nonlinear oscillators into an effective Ising pseudospin model. We introduce a replica ensemble and investigate the effective system susceptibilities through the replica overlap distribution. We find that a transition occurs at a given temperature to a new phase characterized by a slow decay of the relevant correlation functions. Comparison of long time pseudospin correlation functions to maximal replica overlap demonstrates that the high temperature phase has glassy-like properties induced by short range order found in the system.
19 pages, 6 figures

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Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/21963

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0308070
 http://arxiv.org/abs/cond-mat/0308070

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arXiv