Correlation functions for a Bose-Einstein condensate in the Bogoliubov approximation

Authors
Montina, A Arimondo, E
Citation
A. Montina et E. Arimondo, Correlation functions for a Bose-Einstein condensate in the Bogoliubov approximation, EUR PHY J D, 14(1), 2001, pp. 105-110
Citations number
26
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL D
ISSN journal
14346060 → ACNP
Volume
14
Issue
1
Year of publication
2001
Pages
105 - 110
Database
ISI
SICI code
1434-6060(200104)14:1<105:CFFABC>2.0.ZU;2-6
Abstract
In this article we introduce a differential equation for the first order co rrelation function G((1)) of a Bose-Einstein condensate at T = 0. The Bogol iubov approximation is used. Our approach points out directly the dependenc e on the physical parameters. Furthermore it suggests a numerical method to calculate G((1)) without solving an eigenvector problem. The G((1)) equati on is generalized to the case of non zero temperature.