Twisted spin vortices in a spinor-dipolar Bose-Einstein condensate with Rashba spin-orbit coupling

TL;DR

This paper investigates the complex ground-state spin structures, including twisted spin vortices, in a spin-1 Bose-Einstein condensate influenced by Rashba spin-orbit coupling and dipole interactions within a cigar-shaped trap.

Contribution

It provides the first detailed phase diagram showing how spin-orbit and dipole interactions shape the ground states in such condensates.

Findings

Identification of twisted spin vortices as ground states.

Phase diagram mapping spin-orbit and dipole interaction effects.

Rich variety of spin structures due to combined interactions.

Abstract

We consider a spin-1 Bose-Einstein condensate with Rashba spin-orbit coupling and dipole-dipole interaction confined in a cigar-shaped trap. Due to the combined effects of spin-orbit coupling, dipole-dipole interaction, and trap geometry, the system exhibits a rich variety of ground-state spin structures, including twisted spin vortices. The ground-state phase diagram is determined with respect to the strengths of the spin-orbit coupling and dipole-dipole interaction.