Law, K. J. H., Qiao, L., Kevrekidis, P. and Kevrekidis, I. (2008) Stability of quantized vortices in a Bose-Einstein condensate confined in an optical lattice. Physical Review A, Vol.77 (No.5). Article no. 053612 . doi:10.1103/PhysRevA.77.053612 ISSN 1050-2947.

Research output not available from this repository.

Request-a-Copy directly from author or use local Library Get it For Me service.

Request Changes to record.

Abstract

We investigate the existence and especially the linear stability of single- and multiple-charge quantized vortex states of nonlinear Schrödinger equations in the presence of a periodic and a parabolic potential in two spatial dimensions. The study is motivated by an examination of pancake-shaped Bose-Einstein condensates in the presence of magnetic and optical confinement. A two-parameter space of the condensate’s chemical potential versus the periodic potential’s strength is scanned for both single- and double-quantized vortex states located at a local minimum or a local maximum of the lattice. Triple-charged vortices are also briefly discussed. Single-charged vortices are found to be stable for cosinusoidal potentials and unstable for sinusoidal ones above a critical strength. Higher-charge vortices are more unstable for both types of potentials, and their dynamical evolution leads to a breakup into single-charged vortices.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Mathematics
Journal or Publication Title:	Physical Review A
Publisher:	American Physical Society
ISSN:	1050-2947
Official Date:	2008
Dates:	Date Event 2008 Published
Volume:	Vol.77
Number:	No.5
Number of Pages:	12
Page Range:	Article no. 053612
DOI:	10.1103/PhysRevA.77.053612
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

Request changes or add full text files to a record

Repository staff actions (login required)

View Item