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dc.contributor.authorAstrakharchik, Grigori
dc.contributor.authorBoronat Medico, Jordi
dc.contributor.authorKurbakov, I L
dc.contributor.authorLozovik, Y E
dc.contributor.authorMazzanti Castrillejo, Fernando Pablo
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.date.accessioned2010-06-22T11:01:00Z
dc.date.available2010-06-22T11:01:00Z
dc.date.created2010-01
dc.date.issued2010-01
dc.identifier.citationAstrakharchik, G. [et al.]. Low-dimensional weakly interacting Bose gases: nonuniversal equations of state. "Physical review A", Gener 2010, vol. 81, núm. 1, p. 3612-3622.
dc.identifier.issn1050-2947
dc.identifier.urihttp://hdl.handle.net/2117/7792
dc.description.abstractThe zero-temperature equation of state is analyzed in low-dimensional bosonic systems. We propose to use the concept of energy-dependent s-wave scattering length for obtaining estimations of nonuniversal terms in the energy expansion. We test this approach by making a comparison to exactly solvable one-dimensional problems and find that the generated terms have the correct structure. The applicability to two-dimensional systems is analyzed by comparing with results of Monte Carlo simulations. The prediction for the nonuniversal behavior is qualitatively correct and the densities, at which the deviations from the universal equation of state become visible, are estimated properly. Finally, the possibility of observing the nonuniversal terms in experiments with trapped gases is also discussed.
dc.format.extent11 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Física::Física de fluids::Física de gasos
dc.subject.lcshEquations of state
dc.titleLow-dimensional weakly interacting Bose gases: nonuniversal equations of state
dc.typeArticle
dc.contributor.groupUniversitat Politècnica de Catalunya. SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity
dc.identifier.doi10.1103/PhysRevA.81.013612
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://pra.aps.org/pdf/PRA/v81/i1/e013612
dc.rights.accessOpen Access
local.identifier.drac2162097
dc.description.versionPostprint (published version)
local.citation.authorAstrakharchik, G.; Boronat, J.; Kurbakov, I.; Lozovik, Y.; Mazzanti, F.
local.citation.publicationNamePhysical review A
local.citation.volume81
local.citation.number1
local.citation.startingPage3612
local.citation.endingPage3622


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