Off-axis vortex in a rotating dipolar Bose-Einstein condensate
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, cilt.43, sa.13, 2010 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 43 Sayı: 13
- Basım Tarihi: 2010
- Doi Numarası: 10.1088/0953-4075/43/13/135301
- Dergi Adı: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Anadolu Üniversitesi Adresli: Evet
Özet
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 displacements within the TF regime. We prove that the dipolar interaction energy increases (decreases) as the vortex moves from the trap centre to the edge in an oblate (a prolate) trap. We show that the angular velocity representing the onset of metastability is lowered (raised) in an oblate (a prolate) trap. We find that the effect of the dipole-dipole interaction is the lowered (raised) precession velocity of an off-centre straight vortex line in an oblate (a prolate) trap.