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dc.contributor.authorCikojevic, Viktor
dc.contributor.authorVranješ Markic, Leandra
dc.contributor.authorPi Pericay, Martí
dc.contributor.authorBarranco Gómez, Manuel
dc.contributor.authorBoronat Medico, Jordi
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Física Computacional i Aplicada
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.date.accessioned2021-02-03T09:58:04Z
dc.date.available2021-02-03T09:58:04Z
dc.date.issued2020-09-25
dc.identifier.citationCikojevic, V. [et al.]. Towards a quantum Monte Carlo-based density functional including finite-range effects: excitation modes of a K 39 quantum droplet. "Physical Review A", 25 Setembre 2020, vol. 102, núm. 33335, p. 033335:1-033335:8.
dc.identifier.issn2469-9934
dc.identifier.urihttp://hdl.handle.net/2117/336779
dc.description.abstractSome discrepancies between experimental results on quantum droplets made of a mixture of 39K atoms in different hyperfine states and their analysis within extended Gross-Pitaevskii theory (which incorporates beyond mean-field corrections) have been recently solved by introducing finite-range effects into the theory. Here we study the influence of these effects on the monopole and quadrupole excitation spectrum of extremely dilute quantum droplets using a density functional built from first-principles quantum Monte Carlo calculations, which can be easily introduced in the existing Gross-Pitaevskii numerical solvers. Our results show differences of up to 20% with those obtained within the extended Gross-Pitaevskii theory, likely providing another way to observe finite-range effects in mixed quantum droplets by measuring their lowest excitation frequencies.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
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.lcshCondensed matter
dc.subject.otherMixtures of atomic and/or molecular quantum gases
dc.subject.otherQuantum fluids & solids
dc.subject.otherInterdisciplinary physics
dc.subject.otherCondensed matter & materials physics
dc.subject.otherAtomic
dc.subject.othermolecular & optical
dc.subject.otherGross-Pitaevskii theory
dc.titleTowards a quantum Monte Carlo-based density functional including finite-range effects: excitation modes of a K 39 quantum droplet
dc.typeArticle
dc.subject.lemacMontecarlo, Mètode de
dc.subject.lemacMatèria condensada
dc.contributor.groupUniversitat Politècnica de Catalunya. SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity
dc.identifier.doi10.1103/PhysRevA.102.033335
dc.relation.publisherversionhttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.102.033335
dc.rights.accessOpen Access
local.identifier.drac30383422
dc.description.versionPostprint (author's final draft)
local.citation.authorCikojevic, V.; Leandra, V.; Pi Pericay, M.; Barranco, M.; Boronat, J.
local.citation.publicationNamePhysical Review A
local.citation.volume102
local.citation.number033335
local.citation.startingPage033335:1
local.citation.endingPage033335:8


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Attribution-NonCommercial-NoDerivs 3.0 Spain
Llevat que s'hi indiqui el contrari, els continguts d'aquesta obra estan subjectes a la llicència de Creative Commons : Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya