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Vortex lattice formation in dipolar Bose-Einstein condensates via rotation of the polarization

Lookup NU author(s): Dr Tom Bland, Dr Nicholas Parker

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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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Abstract

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.


Publication metadata

Author(s): Prasad SB, Bland T, Mulkerin BC, Parker NG, Martin AM

Publication type: Article

Publication status: Published

Journal: Physical Review A

Year: 2019

Volume: 100

Issue: 2

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

URL: https://doi.org/10.1103/PhysRevA.100.023625

DOI: 10.1103/PhysRevA.100.023625


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