Spinor Bose-Einstein condensate flow past an obstacle

Authors

AS Rodrigues
PG Kevrekidis, University of Massachusetts - AmherstFollow
R Carretero-Gonzalez
DJ Frantzeskakis
P Schmelcher
TJ Alexander
YS Kivshar

Publication Date

2009

Journal or Book Title

PHYSICAL REVIEW A

Abstract

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.

Comments

This is the pre-published version harvested from arXiv. The published version is located at http://pra.aps.org/abstract/PRA/v79/i4/e043603

Pages

-

Volume

79

Issue

4

Recommended Citation

Rodrigues, AS; Kevrekidis, PG; Carretero-Gonzalez, R; Frantzeskakis, DJ; Schmelcher, P; Alexander, TJ; and Kivshar, YS, "Spinor Bose-Einstein condensate flow past an obstacle" (2009). PHYSICAL REVIEW A. 52.
Retrieved from https://scholarworks.umass.edu/math_faculty_pubs/52