Three-dimensional vortex structures in a rotating dipolar Bose-Einstein condensate

Autor(es)

Kumar, Ramavarmaraja Kishor ^[1] ; Sriraman, Thangarasu ^[2] ; Fabrelli, Henrique ^[1] ; Muruganandam, Paulsamy ^[2] ; Gammal, Arnaldo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil

^[2] Bharathidasan Univ, Sch Phys, Palkalaiperur Campus, Tiruchchirappalli 620024, Tamil Nadu - India

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS; v. 49, n. 15 AUG 14 2016.
• Citações Web of Science: 13

Resumo

We study three-dimensional vortex lattice structures in purely dipolar Bose-Einstein condensate (BEC). By using the mean-field approximation, we obtain a stability diagram for the vortex states in purely dipolar BECs as a function of harmonic trap aspect ratio (lambda) and dipole-dipole interaction strength (D) under rotation. Rotating the condensate within the unstable region leads to collapse while in the stable region furnishes stable vortex lattices of dipolar BECs. We analyse stable vortex lattice structures by solving the three-dimensional time-dependent Gross-Pitaevskii equation in imaginary time. Further, the stability of vortex states is examined by evolution in real-time. We also investigate the distribution of vortices in a fully anisotropic trap by increasing eccentricity of the external trapping potential. We observe the breaking up of the condensate in two parts with an equal number of vortices on each when the trap is sufficiently weak, and the rotation frequency is high. (AU)

• Processo FAPESP: 14/01668-8 - Excitações de condensados de Bose-Einstein com interação dipolar
• Beneficiário: Kishor Kumar Ramavarmaraja
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado