Symmetry classification of spin-orbit coupled spinor Bose-Einstein condensates
arXiv:1203.2005 · doi:10.1103/PhysRevA.86.033628
Abstract
We develop a symmetry classification scheme to find ground states of pseudo spin-1/2, spin-1, and spin-2 spin-orbit coupled spinor Bose-Einstein condensates, and show that as the SO(2) symmetry of simultaneous spin and space rotations is broken into discrete cyclic groups, various types of lattice structures emerge in the absence of a lattice potential, examples include two different kagaome lattices for pseudo spin-1/2 condensates and a nematic vortex lattice in which uniaxial and biaxial spin textures align alternatively for spin-2 condensates. For the pseudo spin-1/2 system, although mean-field states always break time-reversal symmetry, there exists a time-reversal invariant many-body ground state, which is fragmented and expected to be observed in a micro-condensate.
arXiv comment9+ pages, 4 figures
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- Spontaneous symmetry breaking in a spin-orbit coupled spinor condensate
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- Interaction driven exotic quantum phases in spin-orbit coupled spin bosons
- Gauge-potential-induced rotation of spin-orbit-coupled Bose-Einstein condensates
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- Strong coupling phases of the spin-orbit-coupled spin-1 Bose-Hubbard chain: odd integer Mott lobes and helical magnetic phases
- Spin relaxation in ultracold spin-orbit coupled K gas
- Vortices and vortex states in Rashba spin-orbit-coupled condensates
- Simulating systems of itinerant spin-carrying particles using arrays of superconducting qubits and resonators
- Strongly interacting spin-orbit coupled Bose-Einstein condensates in one dimension
- Thermodynamics of spin-orbit-coupled Bose-Einstein condensates
- Collective modes of vortex lattices in two-component Bose-Einstein condensates under synthetic gauge fields
- Spontaneous PT symmetry breaking of a ferromagnetic superfluid in a gradient field
- Vortex Lattice Formation in Spin-Orbit-Coupled Spin-2 Bose-Einstein Condensate Under Rotation
- Bose-Einstein condensates in the presence of Weyl spin-orbit coupling
- Ferromagnetic to antiferromagnetic transition of one-dimensional spinor Bose gases with spin-orbit coupling