Stable core symmetries and confined textures for a vortex line in a spinor Bose-Einstein condensate

Magnus O. Borgh, Muneto Nitta, Janne Ruostekoski

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We show how a singly quantized vortex can exhibit energetically stable defect cores with different symmetries in an atomic spin-1 polar Bose-Einstein condensate, and how a stable topologically nontrivial Skyrmion texture of lower dimensionality can be confined inside the core. The core isotropy and the stability of the confined texture are sensitive to Zeeman level shifts. The observed structures have analogies, respectively, in pressure-dependent symmetries of superfluid liquid He3 vortices and in the models of superconducting cosmic strings.
Original languageEnglish
Article number085301
JournalPhysical Review Letters
Issue number8
Publication statusPublished - 26 Feb 2016

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