Collapse times of dipolar Bose-Einstein condensates

Details Collapse times of dipolar Bose-Einstein condensates Collapse times of dipolar Bose-Einstein condensates

2008-09-24

arxiv.org/abs/0809.4294v1

Phys. Rev. A 78. 061607(R) (2008)

Physics

Condensed Matter

Other Condensed Matter

5 pages with 3 figures

Scientific paper

10.1103/PhysRevA.78.061607

We investigate the time taken for global collapse by a dipolar Bose-Einstein condensate. Two semi-analytical approaches and exact numerical integration of the mean-field dynamics are considered. The semi-analytical approaches are based on a Gaussian ansatz and a Thomas-Fermi solution for the shape of the condensate. The regimes of validity for these two approaches are determined, and their predictions for the collapse time revealed and compared with numerical simulations. The dipolar interactions introduce anisotropy into the collapse dynamics and predominantly lead to collapse in the plane perpendicular to the axis of polarization.

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