Off-axis Vortex in a Rotating Dipolar Bose-Einstein Condensation

Abstract

We consider a singly quantized off-axis straight vortex in a rotating dipolar ultracold gas in the Thomas-Fermi (TF) regime. We derive analytic results for small displacements and perform numerical calculations for large displacement within the TF regime. We show that the dipolar interaction energy increases (decreases) as the vortex moves from the trap center to the edge in an oblate (a prolate) trap. We find that for an oblate (a prolate) trap, the effect of the dipole-dipole interaction is to lower (raise) both the precession velocity of an off-center straight vortex line and the angular velocity representing the onset of metastability.

Journal of Physics B (to be published); 9 pages; 6 Figures

References in corpus (10)

• The physics of dipolar bosonic quantum gases
• Bose-Einstein condensation of chromium
• Strong dipolar effects in a quantum ferrofluid
• Stabilizing a purely dipolar quantum gas against collapse
• Dipolar Bose-Einstein condensates with dipole-dependent scattering length
• Vortex solitons in dipolar Bose-Einstein Condensates
• Vortices in dipolar condensates with dominant dipolar interactions
• Vortex in a trapped Bose-Einstein condensate with dipole-dipole interactions
• Exact solutions and stability of rotating dipolar Bose-Einstein condensates in the Thomas-Fermi limit
• Making vortices in dipolar spinor condensates via rapid adiabatic passage

Cited by in corpus (4)

• Efficient spectral computation of the stationary states of rotating Bose-Einstein condensates by the preconditioned nonlinear conjugate gradient method
• Vortices and vortex lattices in quantum ferrofluids
• Arbitrary-angle rotation of the polarization of a dipolar Bose-Einstein condensate
• Critical Trap Aspect Ratios For Dipolar BEC