期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.015301
关键词
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资金
- JSPS [2200247703, 2074023303, 23740198, 2134010303]
- MEXT [22103005, 23103515]
- Grants-in-Aid for Scientific Research [22103005, 21340103, 23740198, 10J02477] Funding Source: KAKEN
We demonstrate that the three-dimensional Skyrmion, which has remained 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. Upon squashing the SO(3) symmetric gauge field to one-or two-dimensional shapes, we find that the ground state continuously undergoes a change from a three-dimensional to a 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 might potentially be realizable in two-component Bose-Einstein condensates experimentally.
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