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dc.contributor.authorMatveeva, N.
dc.contributor.authorAstrakharchik, Grigori
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.date.accessioned2017-03-20T18:57:22Z
dc.date.available2017-03-20T18:57:22Z
dc.date.issued2016-06-22
dc.identifier.citationMatveeva, N., Astrakharchik, G. One-dimensional multicomponent Fermi gas in a trap: quantum Monte Carlo study. "New journal of physics", 22 Juny 2016, vol. 18, núm. 065009, p. 1-12.
dc.identifier.issn1367-2630
dc.identifier.urihttp://hdl.handle.net/2117/102684
dc.description.abstractA one-dimensional world is very unusual as there is an interplay between quantum statistics and geometry, and a strong short-range repulsion between atoms mimics Fermi exclusion principle, fermionizing the system. Instead, a system with a large number of components with a single atom in each, on the opposite acquires many bosonic properties. We study the ground-state properties of a multicomponent repulsive Fermi gas trapped in a harmonic trap by a fixed-node diffusion Monte Carlo method. The interaction between all components is considered to be the same. We investigate how the energetic properties (energy, contact) and correlation functions (density profile and momentum distribution) evolve as the number of components is changed. It is shown that the system fermionizes in the limit of strong interactions. Analytical expressions are derived in the limit of weak interactions within the local density approximation for an arbitrary number of components and for one plus one particle using an exact solution.
dc.format.extent12 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshMonte Carlo method
dc.subject.lcshElectron gas
dc.subject.otherquantum Monte Carlo method
dc.subject.othermulticomponent Fermi gas
dc.subject.otherTonks-Girardeau gas
dc.subject.otherTan's contact
dc.titleOne-dimensional multicomponent Fermi gas in a trap: quantum Monte Carlo study
dc.typeArticle
dc.subject.lemacMontecarlo, Mètode de
dc.subject.lemacGas d'electrons
dc.contributor.groupUniversitat Politècnica de Catalunya. SIMCON - Grup de Recerca de Simulació per Ordinador en Matèria Condensada
dc.identifier.doi10.1088/1367-2630/18/6/065009
dc.relation.publisherversionhttp://iopscience.iop.org/article/10.1088/1367-2630/18/6/065009/meta
dc.rights.accessOpen Access
drac.iddocument19786369
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorMatveeva, N., Astrakharchik, G.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameNew journal of physics
upcommons.citation.volume18
upcommons.citation.number065009
upcommons.citation.startingPage1
upcommons.citation.endingPage12
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