Dipolar Bose-Einstein condensate for large scattering length

Details Dipolar Bose-Einstein condensate for large scattering length Dipolar Bose-Einstein condensate for large scattering length

2012-02-24

arxiv.org/abs/1202.5493v1

Phys. Rev. A 85 (2012) 033619

Physics

Condensed Matter

Quantum Gases

Scientific paper

A uniform dilute Bose gas of known density has a universal behavior as the atomic scattering length tends to infinity at unitarity while most of its properties are determined by a universal parameter $\xi$ relating the energies of the noninteracting and unitary gases. The usual mean-field equation is not valid in this limit and beyond mean-field corrections become important. We use a dynamical model including such corrections to investigate a trapped disk-shaped dipolar Bose-Einstein condensate (BEC) and a dipolar BEC vortex for large scattering length. We study the sensitivity of our results on the parameter $\xi$ and discuss the possibility of extracting the value of this parameter from experimental observables.

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