Phys. Rev. A 69, 053619 (2004) [7 pages]Phase diagram of a rotating Bose-Einstein condensate with anharmonic confinementReceived 20 January 2004; published 18 May 2004 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.69.053619
DOI:
10.1103/PhysRevA.69.053619
PACS:
03.75.Hh, 03.75.Kk, 67.40.Vs
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.