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Pulsating and persistent vector solitons in a Bose-Einstein condensate in a lattice upon phase separation instability

Pulsating and persistent vector solitons in a Bose-Einstein condensate in a lattice upon phase separation instability
Pulsating and persistent vector solitons in a Bose-Einstein condensate in a lattice upon phase separation instability
We study numerically the outcome of the phase separation instability of a dual-species Bose-Einstein condensate in an optical lattice. When only one excitation mode is unstable a bound pair of bright and dark soliton like structures periodically appears and disappears, whereas for more than one unstable mode a persistent soliton-antisoliton pair develops. The oscillating soliton represents a regime where the two species condensate neither remains phase-separated nor is dynamically stable.
0031-9007
190401-[4pp]
Shrestha, Uttam
308de33b-78cf-40f5-903d-78e91ba77f1f
Javanainen, Juha
ae127878-c1cf-4e23-bebb-c3ec76b61081
Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Shrestha, Uttam
308de33b-78cf-40f5-903d-78e91ba77f1f
Javanainen, Juha
ae127878-c1cf-4e23-bebb-c3ec76b61081
Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4

Shrestha, Uttam, Javanainen, Juha and Ruostekoski, Janne (2009) Pulsating and persistent vector solitons in a Bose-Einstein condensate in a lattice upon phase separation instability. Physical Review Letters, 103 (19), 190401-[4pp]. (doi:10.1103/PhysRevLett.103.190401).

Record type: Article

Abstract

We study numerically the outcome of the phase separation instability of a dual-species Bose-Einstein condensate in an optical lattice. When only one excitation mode is unstable a bound pair of bright and dark soliton like structures periodically appears and disappears, whereas for more than one unstable mode a persistent soliton-antisoliton pair develops. The oscillating soliton represents a regime where the two species condensate neither remains phase-separated nor is dynamically stable.

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More information

Submitted date: 25 March 2009
Published date: 6 November 2009
Organisations: Applied Mathematics

Identifiers

Local EPrints ID: 69527
URI: http://eprints.soton.ac.uk/id/eprint/69527
ISSN: 0031-9007
PURE UUID: 8de033eb-ae84-4b37-9954-98d1fa3714f7

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Date deposited: 17 Nov 2009
Last modified: 08 Nov 2021 16:53

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Contributors

Author: Uttam Shrestha
Author: Juha Javanainen

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