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dc.contributor.authorRogel-Salazar, J.
dc.contributor.authorChoi, S.
dc.contributor.authorNew, G. H. C.
dc.contributor.authorBurnett, K.
dc.identifier.citationRogel-Salazar , J , Choi , S , New , G H C & Burnett , K 2004 , ' Methods of quantum field theory for trapped Bose–Einstein condensates ' , Journal of Optics B: Quantum and Semiclassical Optics , vol. 6 , no. 9 , pp. R33-R59 .
dc.identifier.otherPURE: 633066
dc.identifier.otherPURE UUID: f6a876c9-32fb-4a25-9182-2a2c76563c45
dc.identifier.otherBibtex: urn:a4ae7a294d959c0882fe88dcdce9cc0c
dc.identifier.otherScopus: 4644330581
dc.description.abstractIn this tutorial we present an introduction to some theoretical methods of quantum field theory applied to the description of a trapped Bose–Einstein condensate. First of all, we give a brief account of the main characteristics of the phenomenon of condensation and present the many-body Hamiltonian of the system. We outline some of the most important approaches used in the characterization of a condensed Bose gas, including the mean-field theory and the Hartree–Fock–Bogoliubov method. Finally we illustrate the use of these techniques addressing some important issues in quantum atom optics. We characterize the quantum state of a Bose–Einstein condensate (BEC) at zero temperature. We also describe a process of Beliaev coupling between quasiparticles using a method that includes terms beyond the usual Bogoliubov approach.en
dc.relation.ispartofJournal of Optics B: Quantum and Semiclassical Optics
dc.subjectarticle are in colour,atom lasers,bec,bose,bose einstein condensation,entanglement,matter waves,nite temperature eld,nonlinear optics,only in the electronic,parametric down conversion,quasiparticle methods,some gures in this,squeezing,theory,theory of quantized elds
dc.titleMethods of quantum field theory for trapped Bose–Einstein condensatesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.description.statusPeer reviewed
rioxxterms.typeJournal Article/Review

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