Disordered Bosons: Condensate and Excitations
arXiv:cond-mat/9307039 · doi:10.1103/PhysRevB.49.9013
Abstract
The disordered Bose Hubbard model is studied numerically within the Bogoliubov approximation. First, the spatially varying condensate wavefunction in the presence of disorder is found by solving a nonlinear Schrodinger equation. Using the Bogoliubov approximation to find the excitations above this condensate, we calculate the condensate fraction, superfluid density, and density of states for a two-dimensional disordered system. These results are compared with experiments done with adsorbed in porous media.
RevTeX, 26 pages and 10 postscript figures appended (Figure 9 has three separate plots, so 12 postcript files altogether)
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Cited by in corpus (31)
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