Dynamics of a collapsing and exploding Bose-Einstein condensed vortex state
Using the time-dependent mean-field Gross-Pitaevskii equation we study the dynamics of small repulsive Bose-Einstein condensed vortex states of [Formula Presented] atoms in a cylindrical trap with low angular momentum [Formula Presented] per atom [Formula Presented] when the atomic interaction is su...
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2002 |
| Country: | Brasil |
| Institution: | Universidade Estadual Paulista (UNESP) |
| Repository: | Repositório Institucional da UNESP |
| Language: | English |
| OAI Identifier: | oai:repositorio.unesp.br:11449/228446 |
| Online Access: | http://dx.doi.org/10.1103/PhysRevA.66.043601 http://hdl.handle.net/11449/228446 |
| Access Level: | Open access |
| Summary: | Using the time-dependent mean-field Gross-Pitaevskii equation we study the dynamics of small repulsive Bose-Einstein condensed vortex states of [Formula Presented] atoms in a cylindrical trap with low angular momentum [Formula Presented] per atom [Formula Presented] when the atomic interaction is suddenly turned attractive by manipulating the external magnetic field near a Feshbach resonance. Consequently, the condensate collapses and ejects atoms via explosion and a remnant condensate with a smaller number of atoms emerges that survives for a long time. Details of this collapse and explosion are compared critically with a similar experiment performed with zero angular momentum [Formula Presented] by Donley et al. [Nature (London) 412, 295 (2001)]. A suggestion for a future experiment with the vortex state is made. 5555 2002 The American Physical Society. |
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