Quantum Elliptic Vortex in a Nematic-Spin Bose-Einstein Condensate.

@article{Takeuchi2020QuantumEV,
  title={Quantum Elliptic Vortex in a Nematic-Spin Bose-Einstein Condensate.},
  author={Hiromitsu Takeuchi},
  journal={Physical review letters},
  year={2020},
  volume={126 19},
  pages={
          195302
        }
}
  • H. Takeuchi
  • Published 8 September 2020
  • Physics
  • Physical review letters
We find a novel topological defect in a spin-nematic superfluid theoretically. A quantized vortex spontaneously breaks its axisymmetry, leading to an elliptic vortex in nematic-spin Bose-Einstein condensates with small positive quadratic Zeeman effect. The new vortex is considered the Joukowski transform of a conventional vortex. Its oblateness grows when the Zeeman length exceeds the spin healing length. This structure is sustained by balancing the hydrodynamic potential and the elasticity of… 
View on PubMed
dlisv03.media.osaka-cu.ac.jp
11 Citations
Background Citations
6
Methods Citations
1

Figures from this paper

11 Citations

Phase diagram of vortices in the polar phase of spin-1 Bose-Einstein condensates

The phases diagram of lowest-energy vortices in the polar phase of spin-1 Bose--Einstein condensates is investigated theoretically. Singly quantized vortices are categorized by the local ordered…

Revealing Excited States of Rotational Bose-Einstein Condensates

We systematically investigate the excited states of the rotational Bose–Einstein condensates, which are characterized as the stationary points of the Gross–Pitaevskii energy functional. Various…

Vortex Arrangement in an Ultrathin Superconducting Bilayer Disc

Design and Performance Analysis of a New Efficient Heat Transfer Cooling Roller with Non-Straight Channels

Stable striped state in a rotating two-dimensional spin–orbit coupled spin-1/2 Bose–Einstein condensate

We consider an effective two-dimensional Bose–Einstein condensate with some spin–orbit coupling (SOC) and a rotation term in an external harmonic potential. We find the striped state, and analyze the…

Spin-current instability at a magnetic domain wall in a ferromagnetic superfluid: A generation mechanism of eccentric fractional skyrmions

Spinful superfluids of ultracold atoms are ideal for investigating the intrinsic properties of spin current and texture because they are realized in an isolated, nondissipative system free from…

GPU-accelerated solutions of the nonlinear Schrödinger equation for simulating 2D spinor BECs

A numerical scheme for the ground state of rotating spin-1 Bose–Einstein condensates

A multilevel continuation method is proposed for computing the ground state solution of rotating spin-1 BEC by properly choosing the constraint conditions associated with the components of the parameter variable and extensive numerical results demonstrate the efficiency of the proposed algorithm.

Fibration, Nexus and Cosmological Composite Topological Defects in Uniaxially Disordered Superfluid $^3$He

The composited cosmological defects in superfluids of nafen-disorded 3He are discussed in this review article. In spite of the existence of the half quantum vortices (Alice strings), more novel…

GPU-accelerated solutions of the nonlinear Schr\"odinger equation.

As a first approximation beyond linearity, the nonlinear Schrodinger equation reliably describes a broad class of physical systems. Though numerical solutions of this model are well-established,…

References

SHOWING 1-10 OF 90 REFERENCES

Properties of a nematic spin vortex in an antiferromagnetic spin-1 Bose-Einstein condensate

A spin-1 condensate with antiferromagnetic interactions supports nematic spin vortices in the easy-plane polar phase. These vortices have a $2\pi$ winding of the nematic director, with a core…

Phase diagram of solitons in the polar phase of a spin-1 Bose-Einstein condensate

We theoretically study the structure of a stationary soliton in the polar phase of spin-1 Bose--Einstein condensate in the presence of quadratic Zeeman effect at zero temperature. The phase diagram…

Instability crossover of helical shear flow in segregated Bose-Einstein condensates

We theoretically study the instability of helical shear flows, in which one fluid component flows along the vortex core of the other, in phase-separated two-component Bose-Einstein condensates at…

Crossover from weak to strong quench in a spinor Bose-Einstein condensate

We investigate the early-time dynamics of a quasi-two-dimensional spin-1 antiferromagnetic Bose-Einstein condensate after a sudden quench from the easy-plane to the easy-axis polar phase. The…

Domain walls of relative phase in two-component Bose-Einstein condensates

We consider a system of two interpenetrating Bose-Einstein condensates of atoms in two different hyperfine spin states. We show that in the presence of a small coupling drive between the two spin…

Quantum Vortex in a Spinor Bose-Einstein Condensate

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…

Bose-Einstein Condensation in Dilute Gases

1. Introduction 2. The non-interacting Bose gas 3. Atomic properties 4. Trapping and cooling of atoms 5. Interactions between atoms 6. Theory of the condensed state 7. Dynamics of the condensate 8.…

Observation of Wall-Vortex Composite Defects in a Spinor Bose-Einstein Condensate.

The results demonstrate a nucleation mechanism for composite defects via phase transition dynamics for spin domain walls bounded by half-quantum vortices in a spin-1 Bose-Einstein condensate with antiferromagnetic interactions.

Defects at interface between A and B phases of superfluid 3 He

One-dimensional nexus objects, network of Kibble-Lazarides-Shafi string walls, and their spin dynamic response in polar-distortedB-phase ofHe3

  • K. Zhang
  • Physics
    Physical Review Research
  • 2020
The Kibble-Lazarides-Shafi (KLS) domain wall problem in the axion solution of CP violation in QCD has condensed-matter based analogy in the nafen-distorted superfluid $^3$He. Recent experiment in…
...