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Attraction-induced dynamical stability of a Bose-Einstein condensate in a nonlinear lattice | | Raka Dasgupta
; B. Prasanna Venkatesh
; Gentaro Watanabe
; | | Date: |
24 Mar 2016 | | Abstract: | We study multiple-period Bloch states of a Bose-Einstein condensate (BEC)
with spatially periodic interactomic interaction. Solving the Gross-Pitaevskii
(GP) equation for the continuum model, and also using a simplified discrete
version of it, we investigate the energy band structures and the corresponding
stability properties. We observe a new "attraction-induced dynamical stability"
mechanism caused by the localization of the density distribution in the
attractive domains of the system and the isolation of these higher density
regions. This makes the superfluid stable near the zone boundary, and also
enhances the stability of higher-periodic states if the nonlinear interaction
strength is sufficiently high. | | Source: | arXiv, 1603.7486 | | Services: | Forum | Review | PDF | Favorites | |
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