Issue
EPL
Volume 87, Number 1, July 2009
Article Number 13001
Number of page(s) 5
Section Atomic, Molecular and Optical Physics
DOI http://dx.doi.org/10.1209/0295-5075/87/13001
Published online 17 July 2009
EPL, 87 (2009) 13001
DOI: 10.1209/0295-5075/87/13001

A critique on the misuse of the Gross-Pitaevskii equation

Sydney Geltman

Department of Physics, University of Colorado - Boulder, CO 80309-0390, USA

geltman@colorado.edu

received 13 May 2009; accepted in final form 26 June 2009; published July 2009
published online 17 July 2009

Abstract
The Gross-Pitaevskii equation, which is valid only for diffuse boson gases having purely positive interatomic potentials, continues to be used where this condition is not satisfied. An alternate formulation that is universally applicable is discussed.

PACS
31.15.-p - Calculations and mathematical techniques in atomic and molecular physics.
34.20.Cf - Interatomic potentials and forces.
36.40.-c - Atomic and molecular clusters.

© EPLA 2009