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http://hdl.handle.net/2445/9564
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DC Field | Value | Language |
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dc.contributor.author | Fabrocini, A. | cat |
dc.contributor.author | Polls Martí, Artur | cat |
dc.date.accessioned | 2009-10-06T09:42:32Z | - |
dc.date.available | 2009-10-06T09:42:32Z | - |
dc.date.issued | 2001 | cat |
dc.identifier.issn | 1050-2947 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/9564 | - |
dc.description.abstract | Bose-Einstein condensates of 10 4 8 5 Rb atoms in a cylindrical trap are studied using a recently proposed approach based on a local-density approximation. Since the existence of a Feshbach resonance allows for widely tuning the scattering length of the atoms, values of the peak gas parameter x p k of the order of 10 - 2 may be attained and the standard analysis based on Gross-Pitaevskii and/or Thomas-Fermi equations may result in being questionable. Energy functionals derived from the correlated basis functions theory and the low-density expansion for a homogeneous hard-spheres gas are used to estimate corrections to the Gross-Pitaevskii equation. The two functionals give similar results, both showing large differences with respect to the Thomas-Fermi and Gross-Pitaevskii ones. The column densities at z=0 may differ by as much as ∼30% and the half maximum radius by ∼20%. The scattering lengths estimated by fitting the half maximum radius may differ by ∼40% from those given by a Thomas-Fermi-based analysis of the experimental data. | - |
dc.format.extent | 5 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | eng |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevA.64.063610 | cat |
dc.relation.ispartof | Physical Review A, 2001, vol. 64, núm. 6, p. 063610. | eng |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevA.64.063610 | - |
dc.rights | (c) The American Physical Society, 2001 | eng |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Condensació de Bose-Einstein | cat |
dc.subject.classification | Estadística quàntica | cat |
dc.subject.classification | Ionització | cat |
dc.subject.classification | Excitació nuclear | cat |
dc.subject.other | Bose-Einstein condensation | eng |
dc.subject.other | Quantum statistics | eng |
dc.subject.other | Ionization | eng |
dc.subject.other | Nuclear excitation | eng |
dc.title | Bose-Einstein condensates in the large-gas-parameter regime | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 196090 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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196090.pdf | 78.64 kB | Adobe PDF | View/Open |
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