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Self-consistent description of Bose–Bose droplets: modified gapless Hartree–Fock–Bogoliubov method

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cris.lastimport.scopus2024-02-12T19:50:19Z
dc.abstract.enWe define a formalism of a self-consistent description of the ground state of a weakly interacting Bose system, accounting for higher order terms in expansion of energy in the diluteness parameter. The approach is designed to be applied to a Bose–Bose mixture in a regime of weak collapse where quantum fluctuations lead to stabilization of the system and formation of quantum liquid droplets. The approach is based on the generalized Gross–Pitaevskii equation accounting for quantum depletion and renormalized anomalous density terms. The equation is self-consistently coupled to modified Bogoliubov equations. We derive well defined procedure to calculate the zero temperature renormalized anomalous density—the quantity needed to correctly describe the formation of quantum liquid droplet. We pay particular attention to the case of droplets harmonically confined in some directions. The method allows to determine the Lee–Huang–Yang-type contribution to the chemical potential of inhomogeneous droplets when the local density approximation fails.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorGajda, Mariusz
dc.contributor.authorIdziaszek, Zbigniew
dc.contributor.authorPylak, Maciej
dc.contributor.authorZin, Paweł
dc.date.accessioned2024-01-26T07:31:09Z
dc.date.available2024-01-26T07:31:09Z
dc.date.copyright2022-11-25
dc.date.issued2022
dc.description.accesstimeAT_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number11
dc.description.versionFINAL_PUBLISHED
dc.description.volume24
dc.identifier.doi10.1088/1367-2630/ACA175
dc.identifier.issn1367-2630
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/119572
dc.identifier.weblinkhttps://iopscience.iop.org/article/10.1088/1367-2630/aca175
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofNew Journal of Physics
dc.relation.pages113038-1-18
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enquantum droplets
dc.subject.enBose–Bose mixtures
dc.subject.engapless Hartree–Fock–Bogoliubov method
dc.titleSelf-consistent description of Bose–Bose droplets: modified gapless Hartree–Fock–Bogoliubov method
dc.typeJournalArticle
dspace.entity.typePublication