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Stable Skyrmions in SU(2) Gauged Bose-Einstein Condensates | | Takuto Kawakami
; Takeshi Mizushima
; Muneto Nitta
; Kazushige Machida
; | | Date: |
14 Apr 2012 | | Abstract: | We demonstrate that the three-dimensional skyrmion, which remains elusive so
far, spontaneously appears as the ground state of SU(2) symmetric Bose-Einstein
condensates coupled with a non-Abelian gauge field. The gauge field is a
three-dimensional analogue of the Rashba spin-orbit coupling. As squashing the
SO(3) symmetric gauge field to one- or two-dimensional shapes, we find that the
ground state continuously undergoes a change from three-dimensional to one- or
two-dimensional skyrmion, which is identified by estimating winding numbers and
helicity. All of the emerged skyrmions are physically understandable with the
concept of the helical modulation in a unified way. These topological objects
can be realizable in two-component BECs experimentally. | | Source: | arXiv, 1204.3177 | | Services: | Forum | Review | PDF | Favorites | |
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