Dynamics of rotating spin–orbit-coupled Bose–Einstein condensates in a quasicrystalline optical lattice

Abstract

We investigate the dynamics of rotating pseudo-spin-1/2 Bose–Einstein condensates (BECs) with Rashba spin–orbit coupling (SOC) in a quasicrystalline optical lattice (QOL). For given parameters, the system evolves from an initial heliciform-stripe phase into a final visible vortex necklace with a giant vortex and a hidden vortex necklace. Simultaneously, the corresponding spin texture undergoes a transition from a meron–antimeron pair to a half-antiskyrmion necklace. During the dynamic evolution process, the angular momentum increases gradually, and then approaches to a convergent value. Furthermore, typical quantum phases of rotating two-component BECs with SOC in different external potentials are summarized.

Keywords

• Spin–orbit-coupled Bose–Einstein condensates
• Quasicrystalline optical lattice
• Dynamics
• Vortex
• Skyrmion