期刊
ROMANIAN REPORTS IN PHYSICS
卷 75, 期 1, 页码 -出版社
EDITURA ACAD ROMANE
关键词
PT-symmetric nonlocal nonlinear Schro?dinger equation; Bright solitons; KP-hierarchy reduction method
This paper investigates the bright solitons on both zero and periodic wave backgrounds in the space-shifted PT-symmetric nonlocal nonlinear Schrödinger equation. The soliton solutions are obtained using the bilinear KP-hierarchy reduction method and expressed in terms of determinants. The collision dynamics of bright two-soliton solutions on the zero background are studied based on their asymptotic expressions. The bright four-soliton solutions can form bound state two-soliton pairs. The dynamics of bright two-soliton solutions on the periodic wave background are found to be completely different from those on the zero background, even when the periodic waves vanish into the background.
Under investigations in this paper are the bright solitons on the zero and periodic wave background in the space-shifted PT-symmetric nonlocal nonlin-ear Schro center dot dinger equation. These soliton solutions are constructed through the bilinear KP-hierarchy reduction method, and are given in terms of determinants. The collision dynamics of bright two-soliton solutions on the zero background are studied based on their asymptotic expressions. The bright four-soliton solutions can form bound state two-soliton pairs. The bright two-soliton solutions on the periodic wave background are also studied. Compared with the case of solitons on the zero background, the bright two-soliton solutions on the periodic wave background have completely different dy-namics, even though the periodic waves vanish into the background.
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