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A. Diallo and C. Henkel
Excitations at the border of a condensate
J. Phys. B 48 (2015) 165302


    We solve the Bogoliubov equations for an inhomogeneous condensate in the vicinity of a linear turning point. A stable integration scheme is developed using a transformation into an adiabatic basis. We identify boundary modes trapped in a potential whose shape is similar to a Hartree-Fock mean-field treatment. These modes are non-resonantly excited when bulk modes reflect at the turning point and contribute significantly to the spectrum of local density fluctuations.

[ 1504.03164 ] [ DOI ]

file generated: 28 Nov 2016

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