Phase Engineering and Solitons of Bose-Einstein Condensates with Two- and Three-Body Interactions

被引:42
作者
Kumar, Vaduganathan Ramesh [1 ]
Radha, Ramaswamy [1 ]
Wadati, Miki [2 ]
机构
[1] Govt Coll Women Autonomous, Dept Phys, Ctr Nonlinear Sci, Kumbakonam 612001, India
[2] Tokyo Univ Sci, Fac Sci, Dept Phys, Shinjuku Ku, Tokyo 1628601, Japan
关键词
Bose-Einstein condensates; Gross-Pitaevskii equation; bright solitons; gauge transformation; ATOM OPTICS; RB-85;
D O I
10.1143/JPSJ.79.074005
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We introduce a phase imprint into the macroscopic order parameter governing the dynamics of Bose-Einstein condensates with attractive two-body interactions described by a cubic Gross-Pitaevskii (GP) equation and then engineer the imprinted phase suitably to generate the modified GP equation. The modified GP equation describes the dynamics of condensates with both two-(attractive) and three-body (attractive and repulsive) interactions in an expulsive harmonic trap. Employing gauge transformation approach, we then construct bright solitons of the modified GP equation. We observe that the attractive three-body interactions introduce an additional nontrivial phase in the matter wave solitons arising due to attractive two-body interactions without changing their density while the repulsive three-body interactions enormously increase the density of the condensates without causing any change in the phase of the solitons originating from attractive two-body interactions.
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页数:5
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