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Complex solitons in Bose-Einstein condensates with two- and three-body interactions

Roy, Utpal and Atre, Rajneesh and Sudheesh, C and Kumar, C Nagaraja and Panigrahi, Prasanta K (2010) Complex solitons in Bose-Einstein condensates with two- and three-body interactions. In: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 43 (2).

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Official URL: http://www.iop.org/EJ/abstract/0953-4075/43/2/0250...

Abstract

For the first time, we find the complex solitons for a quasi-one-dimensional Bose-Einstein condensate with two-and three-body interactions. These localized solutions are characterized by a power law behaviour. Both dark and right solitons can be excited in the experimentally allowed parameter domain, when two-and three-body interactions are,respectively, repulsive and attractive. The dark solitons travel with a constant speed, which is quite different from the Lieb mode, where profiles with different speeds, bounded above by sound velocity, can exist for specified interaction strengths. We also study the properties of these solitons in the presence of harmonic confinement with time-dependent nonlinearity and loss. The modulational instability and the Vakhitov-Kolokolov criterion of stability are also studied.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Institute of physics.
Department/Centre: Others
Date Deposited: 27 Jan 2010 09:54
Last Modified: 19 Sep 2010 05:54
URI: http://eprints.iisc.ernet.in/id/eprint/25456

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