Number-Conserving Approaches for Atomic Bose-Einstein Condensates: An Overview
Quantum Gases
2017-08-23 v1
Abstract
Assuming the existence of a Bose-Einstein condensate composed of the majority of a sample of ultracold, trapped atoms, perturbative treatments to incorporate the non-condensate fraction are common. Here we describe how this may be carried out in an explicitly number-conserving fashion, providing a common framework for the work of various authors; we also briefly consider issues of implementation, validity and application of such methods.
Cite
@article{arxiv.1207.6382,
title = {Number-Conserving Approaches for Atomic Bose-Einstein Condensates: An Overview},
author = {S. A. Gardiner and T. P. Billam},
journal= {arXiv preprint arXiv:1207.6382},
year = {2017}
}
Comments
Unedited version of chapter to appear in Quantum Gases: Finite Temperature and Non-Equilibrium Dynamics (Vol. 1 Cold Atoms Series). N.P. Proukakis, S.A. Gardiner, M.J. Davis and M.H. Szymanska, eds. Imperial College Press, London (in press). See http://www.icpress.co.uk/physics/p817.html