https://doi.org/10.1007/s100530170241
Correlation functions for a Bose-Einstein condensate in the Bogoliubov approximation
Dipartimento di Fisica and Istituto Nazionale Fisica della
Materia, Università di Pisa,
Via F. Buonarroti 2, 56127 Pisa, Italy
Corresponding author: a almont@fox.ino.it
Received:
20
September
2000
Published online: 15 April 2001
In this article we introduce a differential equation for the first order
correlation function 
of a Bose-Einstein condensate at T=0.
The Bogoliubov approximation is used.
Our approach points out directly the dependence on the physical parameters.
Furthermore it suggests a numerical method to calculate without
solving an eigenvector problem.
The equation is generalized to the case of non zero
temperature.
PACS: 03.75.Fi – Phase coherent atomic ensembles; quantum condensation phenomena / 42.50.-p – Quantum optics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001
