Lookup NU author(s): Dr Tom Bland,
Dr Nicholas Parker
This is the final published version of an article that has been published in its final definitive form by American Physical Society, 2019.
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The behavior of a harmonically trapped dipolar Bose-Einstein condensate with its dipole moments rotating at angular frequencies lower than the transverse harmonic trapping frequency is explored in the co-rotating frame. We obtain semi-analytical solutions for the stationary states in the Thomas-Fermi limit of the corresponding dipolar Gross-Pitaevskii equation and utilize linear stability analysis to elucidate a phase diagram for the dynamical stability of these stationary solutions with respect to collective modes. These results are verified via direct numerical simulations of the dipolar Gross-Pitaevskii equation, which demonstrate that dynamical instabilities of the co-rotating stationary solutions lead to the seeding of vortices that eventually relax into a triangular lattice configuration. Our results illustrate that rotation of the dipole polarization represents a new route to vortex formation in dipolar Bose-Einstein condensates.
Author(s): Prasad SB, Bland T, Mulkerin BC, Parker NG, Martin AM
Publication type: Article
Publication status: Published
Journal: Physical Review A
Print publication date: 27/08/2019
Online publication date: 27/08/2019
Acceptance date: 17/08/2019
Date deposited: 27/08/2019
ISSN (print): 1050-2947
ISSN (electronic): 1094-1622
Publisher: American Physical Society
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