Spinor Bose-Einstein condensate flow past an obstacle

• Type: Article in International Scientific Journal
• Date: 2009

Authors

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

Journal

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

Vol. 79

ISSN: 1050-2947

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 16 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8