Breather lattices as pseudospin glasses

Details Breather lattices as pseudospin glasses Breather lattices as pseudospin glasses

2003-08-05

arxiv.org/abs/cond-mat/0308070v1

Physics

Condensed Matter

Statistical Mechanics

19 pages, 6 figures

Scientific paper

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.

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