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Phase diagram of a rotating Bose-Einstein condensate with anharmonic confinement

Jackson, AD; Kavoulakis, Georgios LU and Lundh, E (2004) In Physical Review A (Atomic, Molecular and Optical Physics) 69(5).
Abstract
We examine the phase diagram of an effectively repulsive Bose-Einstein condensate of atoms that rotates in a quadratic-plus-quartic potential. With use of a variational method we identify the three possible phases of the system as a function of the rotational frequency of the trap and of the coupling constant. The derived phase diagram is shown to be universal and partly exact in the limit of weak interactions and small anharmonicity. The variational results are found to be consistent with numerical solutions of the Gross-Pitaevskii equation.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A (Atomic, Molecular and Optical Physics)
volume
69
issue
5
publisher
American Physical Society (APS)
external identifiers
  • wos:000221813700134
  • scopus:3042750244
ISSN
1050-2947
DOI
10.1103/PhysRevA.69.053619
language
English
LU publication?
yes
id
d9df451d-cea6-4a52-9619-858ffefbdb92 (old id 905607)
date added to LUP
2008-01-10 17:57:46
date last changed
2017-01-01 04:40:33
@article{d9df451d-cea6-4a52-9619-858ffefbdb92,
  abstract     = {We examine the phase diagram of an effectively repulsive Bose-Einstein condensate of atoms that rotates in a quadratic-plus-quartic potential. With use of a variational method we identify the three possible phases of the system as a function of the rotational frequency of the trap and of the coupling constant. The derived phase diagram is shown to be universal and partly exact in the limit of weak interactions and small anharmonicity. The variational results are found to be consistent with numerical solutions of the Gross-Pitaevskii equation.},
  author       = {Jackson, AD and Kavoulakis, Georgios and Lundh, E},
  issn         = {1050-2947},
  language     = {eng},
  number       = {5},
  publisher    = {American Physical Society (APS)},
  series       = {Physical Review A (Atomic, Molecular and Optical Physics)},
  title        = {Phase diagram of a rotating Bose-Einstein condensate with anharmonic confinement},
  url          = {http://dx.doi.org/10.1103/PhysRevA.69.053619},
  volume       = {69},
  year         = {2004},
}