期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 70, 期 6, 页码 1604-1610出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.70.1604
关键词
vortex; spinor Bose-Einstein condensation; Gross-Pitaevskii equation; Bogoliubov equation; collective modes
Quantum vortices in the multi-component Bose-Einstein condensation (BEC) are investigated theoretically. It is found that three kinds of the vortex configurations are possible and their physical properties are discussed in details, including the density distribution and the spin texture. By using the Bogoliubov theory extended to the three component BEG, the collective modes for these vortices are evaluated. The local vortex stability for these vortices are examined in light of the existence of the negative eigenvalue, yielding a narrow magnetization window for the local intrinsic stable region where the multi-components work together to stabilize a vortex in a self-organized way.
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