Vortex patterns in rotating dipolar Bose-Einstein condensate mixtures with squared optical lattices

Autor(es)

Kumar, Ramavarmaraja Kishor ^[1] ; Tomio, Lauro ^{[2, 3]} ; Gammal, Arnaldo ^[1]

Afiliação do(s) autor(es)

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

^[2] DCTA, Inst Tecnol Aeronaut, BR-12228900 Sao Jose Dos Campos - Brazil

^[3] Univ Estadual Paulista, Inst Fis Teor, BR-01140700 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS; v. 52, n. 2 JAN 28 2019.
• Citações Web of Science: 1

Resumo

Vortex-lattice patterns with transitions from regular to other variety vortex shapes are predicted in rotating binary mixtures of dipolar Bose-Einstein condensates loaded in squared optical lattices (OLs). We focus our investigation on the experimentally accessible dipolar isotopes of dysprosium (Dy-162,Dy-164), erbium (Er-168), chromium (Cr-52), and rubidium (Rb-87), by considering the binary mixtures (Dy-164-Dy-162, Er-168-Dy-164, Dy-164-Cr-52 and Dy-164-Rb-87), which are confined in strong pancake-shaped traps and loaded in squared two-dimensional (2D) OLs, where we vary the polarization angle of the dipoles, the inter-species contact interactions and the rotation frequency. The ratio between inter- to intra-species contact interaction is used for altering the miscibility properties, with the polarization of the dipolar species used for tuning the dipole-dipole interactions to repulsive or attractive. For enough higher rotation, where the inter- to intra-species scattering length ratio is larger than one, in which a richer variety of vortex-lattice patterns are predicted, including vortex sheets and 2D rotating droplet formations. The patterns can be controlled by changing the OL parameters, as shown for the symmetric Dy-164-Dy-162 dipolar mixture. For mixtures with stronger differences in the dipole moments, such as Dy-164-Cr-52 and Dy-164-Rb-87, only half the quantum vortices and circular ones have been observed, which will depend on the dipole orientations. (AU)

• Processo FAPESP: 16/17612-7 - Dinâmica de sistemas de muitos corpos IV
• Beneficiário: Arnaldo Gammal
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 17/05660-0 - Estudos teóricos da estrutura e reações de núcleos exóticos e sistemas de muitos corpos
• Beneficiário: Brett Vern Carlson
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• 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