Continuous configuration-interaction for condensates in a ring
Other Condensed Matter
2009-11-10 v1
Abstract
A continuous configuration-interaction approach for condensates in a ring is introduced. In its simplest form this approach utilizes for attractive condensates the Gross-Pitaevskii symmetry-broken solution and arrives at a ground-state of correct symmetry. Furthermore, the energy found is {\it lower} than the Gross-Pitaevskii one and, with increasing number of particles and/or strength of inter-particle interaction, is even {\it lower} than that accessed by tractable diagonalization of the many-body Hamiltonian. Implications also to excited states are briefly discussed.
Cite
@article{arxiv.cond-mat/0402626,
title = {Continuous configuration-interaction for condensates in a ring},
author = {Ofir E. Alon and Alexej I. Streltsov and Kaspar Sakmann and Lorenz S. Cederbaum},
journal= {arXiv preprint arXiv:cond-mat/0402626},
year = {2009}
}
Comments
12 pages, 3 figures