Phase Engineering and Solitons of Bose–Einstein Condensates with Two- and Three-Body Interactions
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概要
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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.
- 2010-07-15
著者
-
Wadati Miki
Department Of Physics Faculty Of Science Tokyo University Of Science
-
Kumar Vaduganathan
Centre for Nonlinear Science, Department of Physics, Government College for Women (Autonomous), Kumbakonam 612001, India
-
Radha Ramaswamy
Centre for Nonlinear Science, Department of Physics, Government College for Women (Autonomous), Kumbakonam 612001, India
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