Interaction of half-quantized vortices in two-component Bose-Einstein condensates

被引：96

作者：

Eto, Minoru ^{[1
]}

Kasamatsu, Kenichi ^{[2
]}

Nitta, Muneto ^{[3
,4
]}

Takeuchi, Hiromitsu ^{[5
]}

Tsubota, Makoto ^{[6
]}

机构：

[1] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan

[2] Kinki Univ, Dept Phys, Higashiosaka, Osaka 5778502, Japan

[3] Keio Univ, Dept Phys, Kanagawa 2238521, Japan

[4] Keio Univ, Res & Educ Ctr Nat Sci, Kanagawa 2238521, Japan

[5] Hiroshima Univ, Grad Sch Integrated Arts & Sci, Higashihiroshima 7398521, Japan

[6] Osaka City Univ, Dept Phys, Sumiyoshi Ku, Osaka 5588585, Japan

来源：

PHYSICAL REVIEW A | 2011年 / 83卷 / 06期

关键词：

GLOBAL STRINGS; VORTEX;

D O I：

10.1103/PhysRevA.83.063603

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the asymptotic interaction between two half-quantized vortices in two-component Bose-Einstein condensates. When two vortices in different components are placed at distance 2R, the leading order of the force between them is found to be (ln R/xi - 1/2)/R-3,in contrast to 1/R between vortices placed in the same component. We derive it analytically using the Abrikosov ansatz and the profile functions of the vortices, confirmed numerically with the Gross-Pitaevskii model. We also find that the short-range cutoff of the intervortex potential linearly depends on the healing length.

引用

页数：8

共 56 条

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