Vector solitons in a spin-orbit-coupled spin-2 Bose-Einstein condensate

Autor(es)

Gautam, Sandeep ^[1] ; Adhikari, S. K. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Inst Fis Teor, BR-01140070 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physical Review A; v. 91, n. 6 JUN 15 2015.
• Citações Web of Science: 21

Resumo

Five-component minimum-energy bound states and mobile vector solitons of a spin-orbit-coupled quasi-one-dimensional hyperfine-spin-2 Bose-Einstein condensate are studied using the numerical solution and variational approximation of a mean-field model. Two distinct types of solutions with single-peak and multipeak density distribution of the components are identified in different domains of interaction parameters. From an analysis of Galilean invariance and time-reversal symmetry of the Hamiltonian, we establish that vector solitons with multipeak density distribution preserve time-reversal symmetry, but they cannot propagate while maintaining the shape of individual components. However, those with single-peak density distribution violate time-reversal symmetry of the Hamiltonian, but they can propagate with a constant velocity and maintain the shape of individual components. (AU)

• Processo FAPESP: 12/00451-0 - Estudo de propriedades do condensado de Bose-Einstein: átomos dipolares e condensado de férmions
• Beneficiário: Sadhan Kumar Adhikari
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/07213-0 - Propriedades estáticas e dinâmicas de condensados com spin
• Beneficiário: Sandeep Gautam
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado