Topological classification of vortex-core structures of spin-1 Bose-Einstein condensates

Shingo Kobayashi, Yuki Kawaguchi, Muneto Nitta, Masahito Ueda

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Abstract

We classify vortex-core structures according to the topology of the order parameter space. We develop a method to characterize how the order parameter changes inside the vortex core. We apply it to spin-1 Bose-Einstein condensates and show that the vortex-core structures are classified by winding numbers that are locally defined in the core region. We also show that a vortex-core structure with a nontrivial winding number can be stabilized under a negative quadratic Zeeman effect.

Original languageEnglish
Article number023612
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume86
Issue number2
DOIs
Publication statusPublished - 2012 Aug 13

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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