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- W1978219042 abstract "The nonlinear Schrödinger equation possesses three distinct six-parameter families of complex-valued quasiperiodic traveling waves, one in the defocusing case and two in the focusing case. All these solutions have the property that their modulus is a periodic function of x−ct for some c∈R. In this paper we investigate the stability of the small amplitude traveling waves, both in the defocusing and the focusing case. Our first result shows that these waves are orbitally stable within the class of solutions which have the same period and the same Floquet exponent as the original wave. Next, we consider general bounded perturbations and focus on spectral stability. We show that the small amplitude traveling waves are stable in the defocusing case, but unstable in the focusing case. The instability is of side-band type, and therefore cannot be detected in the periodic set-up used for the analysis of orbital stability." @default.
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- W1978219042 date "2007-03-01" @default.
- W1978219042 modified "2023-10-06" @default.
- W1978219042 title "Stability of small periodic waves for the nonlinear Schrödinger equation" @default.
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- W1978219042 doi "https://doi.org/10.1016/j.jde.2006.12.007" @default.
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