Fractional-charge vortex in a spinor Bose-Einstein condensate
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American Physical Society (APS)
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Article
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Abstract
We classify all possible fractional charge vortices of charge less than unity in spin-1 and spin-2 polar and cyclic Bose-Einstein condensates (BECs) with zero magnetization. Statics and dynamics of these vortices in quasi-two-dimensional spinor BECs are studied employing an accurate numerical solution and a Lagrange variational approximation. The results for density and collective-mode oscillation are illustrated using the fractional-charge BEC vortex of Na23 and Rb87 atoms with realistic interaction and trapping potential parameters.
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English
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Physical Review A, v. 93, n. 1, 2016.
