Emergent patterns in a spin-orbit coupled spin-2 Bose-Einstein condensate

Abstract

The ground-state phases of a spin-orbit (SO) coupled atomic spin-2 Bose-Einstein condensate (BEC) are studied. Interesting density patterns spontaneously formed are widespread due to the competition between SO coupling and spin-dependent interactions like in a SO coupled spin-1 condensate. Unlike the case of spin-1 condensates, which are characterized by either ferromagnetic or polar phase in the absence of SO, spin-2 condensates can take a cyclic phase, where we find the patterns formed due to SO are square or triangular in their spin component densities for axial symmetric SO interaction. Both patterns are found to continuously evolve into striped forms with increased asymmetry of the SO coupling.

5 pages, 5 figures

References in corpus (9)

• Spontaneous symmetry breaking in a quenched ferromagnetic spinor Bose condensate
• Spin-Orbit Coupled Spinor Bose-Einstein Condensates
• A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential
• Non-Abelian gauge potentials for ultra-cold atoms with degenerate dark states
• Spin-orbit coupled Bose-Einstein condensates
• Effective magnetic fields in degenerate atomic gases induced by light beams with orbital angular momenta
• Practical scheme for a light-induced gauge field in an atomic Bose gas
• Spontaneous breaking of spatial and spin symmetry in spinor condensates
• Metal-Insulator Transition Revisited for Cold Atoms in Non-Abelian Gauge Potentials