Symmetry-protected skyrmions in three-dimensional spin-orbit-coupled Bose gases

  title={Symmetry-protected skyrmions in three-dimensional spin-orbit-coupled Bose gases},
  author={Guanjun Chen and Tiantian Li and Yun-bo Zhang},
  journal={Physical Review A},
We present a variational study of pseudo-spin-$1/2$ Bose gases in a harmonic trap with weak three-dimensional (3D) spin-orbit coupling of $\mathbf{\ensuremath{\sigma}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbf{p}$ type. This spin-orbit coupling mixes states with different parities, which inspires us to approximate the single-particle state with the eigenstates of the total angular momentum, i.e., superposition of harmonic $s$-wave and $p$-wave states. As the time-reversal symmetry is… 
7 Citations

Figures from this paper

Magnetic and nematic phases in a Weyl type spin-orbit-coupled spin-1 Bose gas
We present a variational study of the spin-1 Bose gases in a harmonic trap with three-dimensional spin-orbit coupling of Weyl type. For weak spin-orbit coupling, we treat the single-particle ground
Spin-exchange-induced spin-orbit coupling in a superfluid mixture
We investigate the ground-state properties of a dual-species spin-1/2 Bose-Einstein condensate. One of the species is subjected to a pair of Raman laser beams that induces spin-orbit (SO) coupling,
Weyl type spin–orbit coupled ferromagnetic Bose–Einstein condensates under rotation
Abstract We investigate the ground state of ferromagnetic Bose–Einstein condensates with Weyl type spin–orbit coupling and rotation. When the spin–orbit coupling is strong, the ground state of the
Characterized helical modulation of three-dimensional Skyrmions in the spin-orbit coupled condensate
For the Bose–Einstein condensate in the non-Abelian gauge field, the atomic wavefunction obtains helical modulation, which would lead to nontrivial objects, such as three-dimensional Skyrmion. The ...
Effects of Higher Order Interaction on Vortex Formation in Bose-Einstein Condensates
We consider theoretically the formation of vortex in rotating Bose-Einstein condensates (BECs) with higher order interaction (HOI). Our results are obtained from the twodimensional Gross-Pitaevskii
Spin-orbit-coupled spin-1 Bose-Einstein-condensate flow past an obstacle in the presence of a Zeeman field
We study the dynamics of a Rashba spin-orbit coupled spin-1 ferromagnetic Bose-Einstein condensate under a linear Zeeman magnetic field(ZF) disturbed by a moving obstacle. The Bogoliubov excitation


  • Rev. Lett. 111, 125301
  • 2013
  • Rev. Lett. 108, 225301
  • 2012