期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.173901
关键词
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资金
- Ramon y Cajal program
- FPU Ph.D. program
- Xunta de Galicia [EM2013/002]
We study the cubic- (focusing-) quintic (defocusing) nonlinear Schrodinger equation in two transverse dimensions. We discuss a family of stationary traveling waves, including rarefaction pulses and vortex-antivortex pairs, in a background of critical amplitude. We show that these rarefaction pulses can be generated inside a flattop soliton when a smaller bright soliton collides with it. The fate of the evolution strongly depends on the relative phase of the solitons. Among several possibilities, we find that the dark pulse can reemerge as a bright soliton.
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