Half-Quantum Vortex Molecules in a Binary Dipolar Bose Gas

2014/06/04 by Wilbur Shirley, Wilbur E. Shirley, Brandon M. Anderson +4
Physics and Astronomy · #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Component (thermodynamics) #Condensed matter physics #Dipole #Ground state #Molecule #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum mechanics #Quantum phase transition #Quantum phases #Strong Light-Matter Interactions #Thermodynamics #Vortex #cond-mat.quant-gas

paper · pdf · doi:10.1103/physrevlett.113.165301

published as Phys. Rev. Lett. 113, 165301 (2014) · 4+ pages, 4 figures

arxiv created 2014/06/04 · openalex publication_date 2014/10/15 · arxiv updated 2014/10/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We study the ground state phases of a rotating two-component, or binary, Bose-Einstein condensate, wherein one component possesses a large permanent magnetic dipole moment. A variety of nontrivial phases emerge in this system, including a half-quantum vortex (HQV) chain phase and a HQV molecule phase, where HQVs bind at short distances. We attribute these phases to the development of a minimum in the HQV interaction potential, which emerges without coherent coupling or attractive interactions between the components. Thus, we show that the presence of dipolar interactions in this system provides a unique mechanism for the formation of HQV molecules and results in a rich ground state phase diagram.

Citations

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