Quantum corrections to the semiclassical Hartree-Fock theory of a harmonically trapped Bose gas
2012 (English)In: European Physical Journal D: Atomic, Molecular and Optical Physics, ISSN 1434-6060, E-ISSN 1434-6079, Vol. 66, no 8, 203- p.Article in journal (Refereed) Published
Using the phase-space expansion of the thermodynamical distribution functions we provide a general and systematic method for including effects beyond the local-density approximation to the semiclassical Hartree-Fock theories. We illustrate the method by applying it to the case of a strictly two-dimensional, harmonically trapped Bose gas. Thereby, we address the ambiguous prediction of the Hartree-Fock approximation, namely, whether a fixed number of trapped atoms undergoes Bose-Einstein condensation or not. We also investigate the dependence of the critical temperature on the interaction strength.
Place, publisher, year, edition, pages
2012. Vol. 66, no 8, 203- p.
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:su:diva-81553DOI: 10.1140/epjd/e2012-30225-yISI: 000308253500023OAI: oai:DiVA.org:su-81553DiVA: diva2:564072