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

Lookup NU author(s): Robert Pattinson, Dr Thomas BillamORCiD, Professor Nick ParkerORCiD, Professor Nikolaos ProukakisORCiD

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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 Rb-87-Cs-133 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. DOI: 10.1103/PhysRevA.87.013625

Publication metadata

Author(s): Pattinson RW, Billam TP, Gardiner SA, McCarron DJ, Cho HW, Cornish SL, Parker NG, Proukakis NP

Publication type: Article

Publication status: Published

Journal: Physical Review A

Year: 2013

Volume: 87

Issue: 1

Print publication date: 23/01/2013

ISSN (print): 1050-2947

ISSN (electronic): 1094-1622

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevA.87.013625

DOI: 10.1103/PhysRevA.87.013625

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