Decay of DNLS breathers through inelastic multiphonon scattering

Abstract

We consider the long-time evolution of weakly perturbed discrete nonlinear Schroedinger breathers. While breather growth can occur through nonlinear interaction with one single initial linear mode, breather decay is found to require excitation of at least two independent modes. All growth and decay processes of lowest order are found to disappear for breathers larger than a threshold value.

4 pages, 1 figure, to be published in Physical Review E

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Cited by in corpus (3)

• A simple statistical explanation for the localization of energy in nonlinear lattices with two conserved quantities
• Classical and quantum radiation of perturbed discrete breathers
• Frozen dynamics of a breather induced by an adiabatic invariant