Quasi-particle excitations and dynamical structure function of trapped Bose-condensates in the WKB approximation
Condensed Matter
2009-10-30 v1
Abstract
The Bogoliubov equations of the quasi-particle excitations in a weakly interacting trapped Bose-condensate are solved in the WKB approximation in an isotropic harmonic trap, determining the discrete quasi-particle energies and wave functions by torus (Bohr-Sommerfeld) quantization of the integrable classical quasi-particle dynamics. The results are used to calculate the position and strengths of the peaks in the dynamic structure function which can be observed by off-resonance inelastic light-scattering.
Keywords
Cite
@article{arxiv.cond-mat/9711140,
title = {Quasi-particle excitations and dynamical structure function of trapped Bose-condensates in the WKB approximation},
author = {András Csordás and Robert Graham and Péter Szépfalusy},
journal= {arXiv preprint arXiv:cond-mat/9711140},
year = {2009}
}
Comments
23 pages, Latex, 6 figures