Stability of rotating states in a weakly interacting Bose-Einstein condensate
(2002) In Physical Review A (Atomic, Molecular and Optical Physics) 65(2).- Abstract
- We investigate the lowest state of a rotating, weakly interacting Bose-Einstein condensate trapped in a harmonic confining potential that is driven by an infinitesimally asymmetric perturbation. Although in an axially symmetric confining potential the gas has an axially symmetric single-particle density distribution, we show that in the presence of the small asymmetric perturbation its lowest state is the one given by the mean-field approximation, which is a broken-symmetric state. We also estimate the rate of relaxation of angular momentum when the gas is no longer driven by the asymmetric perturbation and identify two regimes of "slow" and "fast" relaxation. States of certain symmetry are found to be more robust.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/910180
- author
- Kavoulakis, Georgios LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review A (Atomic, Molecular and Optical Physics)
- volume
- 65
- issue
- 2
- publisher
- American Physical Society
- external identifiers
-
- wos:000173879500095
- scopus:18744422468
- ISSN
- 1050-2947
- DOI
- 10.1103/PhysRevA.65.023602
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
- id
- 1ffe1c88-2cdb-47e7-b245-06340ca5fc13 (old id 910180)
- date added to LUP
- 2016-04-01 11:52:29
- date last changed
- 2022-01-26 19:31:38
@article{1ffe1c88-2cdb-47e7-b245-06340ca5fc13,
abstract = {{We investigate the lowest state of a rotating, weakly interacting Bose-Einstein condensate trapped in a harmonic confining potential that is driven by an infinitesimally asymmetric perturbation. Although in an axially symmetric confining potential the gas has an axially symmetric single-particle density distribution, we show that in the presence of the small asymmetric perturbation its lowest state is the one given by the mean-field approximation, which is a broken-symmetric state. We also estimate the rate of relaxation of angular momentum when the gas is no longer driven by the asymmetric perturbation and identify two regimes of "slow" and "fast" relaxation. States of certain symmetry are found to be more robust.}},
author = {{Kavoulakis, Georgios}},
issn = {{1050-2947}},
language = {{eng}},
number = {{2}},
publisher = {{American Physical Society}},
series = {{Physical Review A (Atomic, Molecular and Optical Physics)}},
title = {{Stability of rotating states in a weakly interacting Bose-Einstein condensate}},
url = {{http://dx.doi.org/10.1103/PhysRevA.65.023602}},
doi = {{10.1103/PhysRevA.65.023602}},
volume = {{65}},
year = {{2002}},
}