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

TL;DR

This paper studies the complex dynamics of rotating spin-orbit-coupled Bose-Einstein condensates in a quasicrystalline optical lattice, revealing phase transitions, vortex formations, and spin texture evolutions.

Contribution

It introduces the dynamic evolution of spin textures and vortex structures in rotating SOC BECs within a quasicrystalline lattice, highlighting new phase transition behaviors.

Findings

Initial heliciform-stripe phase evolves into vortex necklace

Spin texture transitions from meron-antimeron pair to half-antiskyrmion

Angular momentum approaches a steady value during evolution

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.