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Equilibrium solutions for immiscible two-species Bose-Einstein condensates in perturbed harmonic traps

Pattinson, R.W.; Billam, T.P.; Gardiner, S.A.; McCarron, D.J.; Cho, H.W.; Cornish, S.L.; Parker, N.G.; Proukakis, N.P.

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Authors

R.W. Pattinson

T.P. Billam

D.J. McCarron

H.W. Cho

N.G. Parker

N.P. Proukakis



Abstract

We investigate the mean-field equilibrium solutions for a two-species immiscible Bose-Einstein condensate confined by a harmonic confinement with additional linear perturbations. We observe a range of equilibrium density structures, including ball and shell formations and axially or radially separated states, with a marked sensitivity to the potential perturbations and the relative atom number in each species. Incorporation of linear trap perturbations, albeit weak, are found to be essential to match the range of equilibrium density profiles observed in a recent 87Rb-133Cs Bose-Einstein condensate experiment [McCarron et al., Phys. Rev. A 84 011603(R) (2011)]. Our analysis of this experiment demonstrates that sensitivity to linear trap perturbations is likely to be an important factor in interpreting the results of similar experiments in the future.

Citation

Pattinson, R., Billam, T., Gardiner, S., McCarron, D., Cho, H., Cornish, S., …Proukakis, N. (2013). Equilibrium solutions for immiscible two-species Bose-Einstein condensates in perturbed harmonic traps. Physical Review A, 87(1), Article 013625. https://doi.org/10.1103/physreva.87.013625

Journal Article Type Article
Publication Date Jan 23, 2013
Deposit Date Mar 4, 2013
Publicly Available Date Jun 26, 2014
Journal Physical Review A
Print ISSN 1050-2947
Electronic ISSN 1094-1622
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 87
Issue 1
Article Number 013625
DOI https://doi.org/10.1103/physreva.87.013625

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Copyright Statement
Reprinted with permission from the American Physical Society: R. W. Pattinson, T. P. Billam, S. A. Gardiner, D. J. McCarron, H. W. Cho, S. L. Cornish, N. G. Parker, and N. P. Proukakis, Physical Review A, 87, 013625, 2013. © 2013 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.





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