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Towards a quantum Monte Carlo-based density functional including finite-range effects: excitation modes of a K 39 quantum droplet
dc.contributor.author | Cikojevic, Viktor |
dc.contributor.author | Vranješ Markic, Leandra |
dc.contributor.author | Pi Pericay, Martí |
dc.contributor.author | Barranco Gómez, Manuel |
dc.contributor.author | Boronat Medico, Jordi |
dc.contributor.other | Universitat Politècnica de Catalunya. Doctorat en Física Computacional i Aplicada |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.date.accessioned | 2021-02-03T09:58:04Z |
dc.date.available | 2021-02-03T09:58:04Z |
dc.date.issued | 2020-09-25 |
dc.identifier.citation | Cikojevic, 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.issn | 2469-9934 |
dc.identifier.uri | http://hdl.handle.net/2117/336779 |
dc.description.abstract | Some 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.iso | eng |
dc.publisher | American Physical Society |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Física |
dc.subject.lcsh | Monte Carlo method |
dc.subject.lcsh | Condensed matter |
dc.subject.other | Mixtures of atomic and/or molecular quantum gases |
dc.subject.other | Quantum fluids & solids |
dc.subject.other | Interdisciplinary physics |
dc.subject.other | Condensed matter & materials physics |
dc.subject.other | Atomic |
dc.subject.other | molecular & optical |
dc.subject.other | Gross-Pitaevskii theory |
dc.title | Towards a quantum Monte Carlo-based density functional including finite-range effects: excitation modes of a K 39 quantum droplet |
dc.type | Article |
dc.subject.lemac | Montecarlo, Mètode de |
dc.subject.lemac | Matèria condensada |
dc.contributor.group | Universitat Politècnica de Catalunya. SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity |
dc.identifier.doi | 10.1103/PhysRevA.102.033335 |
dc.relation.publisherversion | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.102.033335 |
dc.rights.access | Open Access |
local.identifier.drac | 30383422 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Cikojevic, V.; Leandra, V.; Pi Pericay, M.; Barranco, M.; Boronat, J. |
local.citation.publicationName | Physical Review A |
local.citation.volume | 102 |
local.citation.number | 033335 |
local.citation.startingPage | 033335:1 |
local.citation.endingPage | 033335:8 |
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