Weakly interacting two-dimensional system of dipoles: limitations of mean-field theory
arXiv:cond-mat/0612691 · doi:10.1103/PhysRevA.75.063630
Abstract
We consider a homogeneous 2D Bose gas with repulsive dipole-dipole interactions. The ground-state equation of state, calculated using the Diffusion Monte Carlo method, shows quantitative differences with predictions of commonly used Gross-Pitaevskii mean-field theory. The static structure factor, pair distribution function and condensate fraction are calculated in a wide range of the gas parameter. Differences with mean-field theory are reflected in the frequency of the lowest ``breathing'' mode for harmonically trapped systems.
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Cited by in corpus (15)
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