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Roberto Livi |
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Università di Firenze |
Abstract
Boundary dissipation applied to the Discrete Nonlinear Schrodinger
Equation is a practical procedure for the distillation of Breather
states, that can be interpreted as small atomic condensates or localized
light beams in BEC and quantum optics, respectively. The appearance of this
kind of solutions, far from being a peculiar nonlinear effect, is shown
to be related to the thermodynamics of the DNLSE, where isolated breathers
are special cases of a much wider class of equilibrium states at negative
temperature.