Discrete breathers in thermal equilibrium: distributions and energy gaps

Details Discrete breathers in thermal equilibrium: distributions and energy gaps Discrete breathers in thermal equilibrium: distributions and energy gaps

2004-09-17

arxiv.org/abs/cond-mat/0409450v1

Physics

Condensed Matter

Statistical Mechanics

20 pages, 14 figures

Scientific paper

10.1016/j.physd.2005.02.002

We study a discrete two-dimensional nonlinear system that allows for discrete breather solutions. We perform a spectral analysis of the lattice dynamics at thermal equilibrium and use a cooling technique to measure the amount of breathers at thermal equilibrium. Our results confirm the existence of an energy threshold for discrete breathers. The cooling method provides with a novel computational technique of measuring and analyzing discrete breather distribution properties in thermal equilibrium.

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