期刊
CHAOS
卷 25, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4907556
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资金
- School of Mathematical Sciences, University of Nottingham
- Fund of Social Development Corporate Fund [KU-13/28]
- Central Research Office (CRO) of Nazarbayev University Research and Innovation System (NURIS), Kazakhstan [KU-13/28]
We study collisions of moving nonlinear-Schrodinger solitons with a PT-symmetric dipole embedded into the one-dimensional self-focusing or defocusing medium. Accurate analytical results are produced for bright solitons, and, in a more qualitative form, for dark ones. In the former case, an essential aspect of the approximation is that it must take into regard the intrinsic chirp of the soliton, thus going beyond the framework of the simplest quasi-particle description of the soliton's dynamics. Critical velocities separating reflection and transmission of the incident bright solitons are found by means of numerical simulations, and in the approximate semi-analytical form. An exact solution for the dark soliton pinned by the complex PT-symmetric dipole is produced too. (C) 2015 AIP Publishing LLC.
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