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arXiv · 0902.3058

Phase transition from straight into twisted vortex-lines in dipolar Bose-Einstein condensates

M. Klawunn·L. Santos
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Abstract

The non-local non-linearity introduced by the dipole-dipole interaction plays a crucial role in the physics of dipolar Bose-Einstein condensates. In particular, it may distort significantly the stability of straight vortex lines due to the rotonization of the Kelvin-wave spectrum. In this paper we analyze this instability showing that it leads to a second-order-like phase transition from a straight vortex-line into novel helical or snake-like configurations, depending on the dipole orientation.

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M. Klawunn, L. Santos. 2009-02-18. Phase transition from straight into twisted vortex-lines in dipolar Bose-Einstein condensates. https://doi.org/10.1088/1367-2630%2F11%2F5%2F055012

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