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Instability of Rotationally Tuned Dipolar Bose-Einstein Condensates

Lookup NU author(s): Dr Tom Bland, Professor Nick ParkerORCiD



This is the authors' accepted manuscript of a letter that has been published in its final definitive form by American Physical Society, 2019.

For re-use rights please refer to the publisher's terms and conditions.


The possibility of effectively inverting the sign of the dipole-dipole interaction, by fast rotation of the dipole polarization, is examined within a harmonically trapped dipolar Bose-Einstein condensate. Our analysis is based on the stationary states in the Thomas-Fermi limit, in the corotating frame, as well as direct numerical simulations in the Thomas-Fermi regime, explicitly accounting for the rotating polarization. The condensate is found to be inherently unstable due to the dynamical instability of collective modes. This ultimately prevents the realization of robust and long-lived rotationally tuned states. Our findings have major implications for experimentally accessing this regime.

Publication metadata

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

Publication type: Letter

Publication status: Published

Journal: Physical Review Letters

Year: 2019

Volume: 122

Print publication date: 06/02/2019

Online publication date: 06/02/2019

Acceptance date: 24/01/2019

ISSN (print): 0031-9007

ISSN (electronic): 1079-7114

Publisher: American Physical Society


DOI: 10.1103/PhysRevLett.122.050401