Energetic stability of coreless vortices in spin-1 Bose-Einstein condensates with conserved magnetization

Abstract

We show that conservation of longitudinal magnetization in a spinor condensate provides a stabilizing mechanism for a coreless vortex phase-imprinted on a polar condensate. The stable vortex can form a composite topological defect with distinct small- and large-distance topology: the inner ferromagnetic coreless vortex continuously deforms toward an outer singular, singly quantized polar vortex. A similar mechanism can also stabilize a nonsingular nematic texture in the polar phase. A weak magnetization is shown to destabilize a coreless vortex in the ferromagnetic phase.

10 pages, 3 figures

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• Topological interface physics of defects and textures in spinor Bose-Einstein condensates
• Stability of coreless vortices in ferromagnetic spinor Bose-Einstein condensates

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• Decay of a Quantum Knot
• A route to non-Abelian quantum turbulence in spinor Bose-Einstein condensates
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• Topological optical skyrmion transfer to matter
• Stable core symmetries and confined textures for a vortex line in a spinor Bose-Einstein condensate
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• Synthetic superfluid chemistry with vortex-trapped quantum impurities
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• A damped point-vortex model for polar-core spin vortices in a ferromagnetic spin-1 Bose-Einstein condensate
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• Controlled Creation and Decay of Singly-Quantized Vortices in a Polar Magnetic Phase
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• Topological Superfluid Defects with Discrete Point Group Symmetries
• Fate of Topology in Spin-1 Spinor Bose-Einstein Condensate
• Phase diagram of vortices in the polar phase of spin-1 Bose-Einstein condensates
• Nonlinearity and Topology
• Angular momentum in interacting many-body systems hides in phantom vortices
• Equilibrium vortex lattices of a binary rotating atomic Bose-Einstein condensate with unequal atomic masses
• Topological interfaces crossed by defects and textures of continuous and discrete point group symmetries in spin-2 Bose-Einstein condensates
• Stabilizing the false vacuum: Mott skyrmions
• Many-body effects in the excitations and dynamics of trapped Bose-Einstein condensates