Continuous configuration-interaction for condensates in a ring
Preprint
- 25 February 2004
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.Keywords
All Related Versions
- Version 1, 2004-02-25, ArXiv
- Published version: Europhysics Letters, 67 (1), 8.
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