Elementary excitations of a Bose-Einstein condensate in an effective magnetic field

D. R. Murray, Stephen M. Barnett, Patrik Ohberg, Damià Gomila

Research output: Contribution to journalArticle

Abstract

We calculate the low-energy elementary excitations of a Bose-Einstein condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms. We examine the role of the homogeneous magnetic field, familiar from studies of rotating condensates, and also investigate spectra for vector potentials with a more general radial dependence. We discuss the instabilities which arise and how these may be manifested. © 2007 The American Physical Society.

Original languageEnglish
Article number053626
JournalPhysical Review A
Volume76
Issue number5
DOIs
Publication statusPublished - 29 Nov 2007

Fingerprint

elementary excitations
Bose-Einstein condensates
magnetic fields
light beams
condensates
angular momentum
orbitals
atoms
energy

Cite this

Murray, D. R. ; Barnett, Stephen M. ; Ohberg, Patrik ; Gomila, Damià. / Elementary excitations of a Bose-Einstein condensate in an effective magnetic field. In: Physical Review A. 2007 ; Vol. 76, No. 5.
@article{390dd45e95e54c559a03e1ab838afb86,
title = "Elementary excitations of a Bose-Einstein condensate in an effective magnetic field",
abstract = "We calculate the low-energy elementary excitations of a Bose-Einstein condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms. We examine the role of the homogeneous magnetic field, familiar from studies of rotating condensates, and also investigate spectra for vector potentials with a more general radial dependence. We discuss the instabilities which arise and how these may be manifested. {\circledC} 2007 The American Physical Society.",
author = "Murray, {D. R.} and Barnett, {Stephen M.} and Patrik Ohberg and Dami{\`a} Gomila",
year = "2007",
month = "11",
day = "29",
doi = "10.1103/PhysRevA.76.053626",
language = "English",
volume = "76",
journal = "Physical Review A",
issn = "1050-2947",
publisher = "American Physical Society",
number = "5",

}

Elementary excitations of a Bose-Einstein condensate in an effective magnetic field. / Murray, D. R.; Barnett, Stephen M.; Ohberg, Patrik; Gomila, Damià.

In: Physical Review A, Vol. 76, No. 5, 053626, 29.11.2007.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Elementary excitations of a Bose-Einstein condensate in an effective magnetic field

AU - Murray, D. R.

AU - Barnett, Stephen M.

AU - Ohberg, Patrik

AU - Gomila, Damià

PY - 2007/11/29

Y1 - 2007/11/29

N2 - We calculate the low-energy elementary excitations of a Bose-Einstein condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms. We examine the role of the homogeneous magnetic field, familiar from studies of rotating condensates, and also investigate spectra for vector potentials with a more general radial dependence. We discuss the instabilities which arise and how these may be manifested. © 2007 The American Physical Society.

AB - We calculate the low-energy elementary excitations of a Bose-Einstein condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms. We examine the role of the homogeneous magnetic field, familiar from studies of rotating condensates, and also investigate spectra for vector potentials with a more general radial dependence. We discuss the instabilities which arise and how these may be manifested. © 2007 The American Physical Society.

UR - http://www.scopus.com/inward/record.url?scp=36648998730&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.76.053626

DO - 10.1103/PhysRevA.76.053626

M3 - Article

VL - 76

JO - Physical Review A

JF - Physical Review A

SN - 1050-2947

IS - 5

M1 - 053626

ER -