Spinor Bose-Einstein condensate flow past an obstacle

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Rodrigues, AS (Autor) FCUP; Kevrekidis, PG (Autor) Outra; Carretero Gonzalez, R (Autor) Outra; Frantzeskakis, DJ (Autor) Outra; Schmelcher, P (Autor) Outra; Alexander, TJ (Autor) Outra; Yu. S Kivshar (Autor) Outra

Revista

Título: Physical Review A - Atomic, Molecular, and Optical Physics

Vol. 79

ISSN: 1050-2947

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 15 Citações

Scopus - 16 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-003-MAD

DOI: 10.1103/physreva.79.043603

Abstract (EN): We study the flow of a spinor (F=1) Bose-Einstein condensate in the presence of an obstacle. We consider the cases of ferromagnetic and polar spin-dependent interactions, and find that the system demonstrates two speeds of sound that are identified analytically. Numerical simulations reveal the nucleation of macroscopic nonlinear structures, such as dark solitons and vortex-antivortex pairs, as well as vortex rings in one- and higher-dimensional settings, respectively, when a localized defect (e.g., a blue-detuned laser beam) is dragged through the spinor condensate at a speed larger than the second critical speed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8