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Vortex shedding frequency of a moving obstacle in a Bose-Einstein condensate

DC Field Value Language
dc.contributor.authorYounghoon Lim-
dc.contributor.authorYangheon Lee-
dc.contributor.authorGoo, Junhong-
dc.contributor.authorDalmin Bae-
dc.contributor.authorY Shin-
dc.date.accessioned2022-10-14T22:01:35Z-
dc.date.available2022-10-14T22:01:35Z-
dc.date.created2022-09-28-
dc.date.issued2022-08-
dc.identifier.issn1367-2630-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/12341-
dc.description.abstractWe experimentally investigate the periodic vortex shedding dynamics in a highly oblate Bose-Einstein condensate using a moving penetrable Gaussian obstacle. The shedding frequency f (v) is measured as a function of the obstacle velocity v and characterized by a linear relationship of f (v) = a(v - v (c)) with v (c) being the critical velocity. The proportionality constant a is linearly decreased with a decrease in the obstacle strength, whereas v (c) approaches the speed of sound. When the obstacle size increases, both a and v (c) are decreased. We discuss a possible association of a with the Strouhal number in the context of universal shedding dynamics of a superfluid. The critical vortex shedding is further investigated for an oscillating obstacle and found to be consistent with the measured f (v). When the obstacle's maximum velocity exceeds v (c) but its oscillation amplitude is not large enough to create a vortex dipole, we observe that vortices are generated in the low-density boundary region of the trapped condensate, which is attributed to the phonon emission from the oscillating obstacle.-
dc.language영어-
dc.publisherIOP Publishing Ltd-
dc.titleVortex shedding frequency of a moving obstacle in a Bose-Einstein condensate-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000841738700001-
dc.identifier.scopusid2-s2.0-85136579690-
dc.identifier.rimsid78887-
dc.contributor.affiliatedAuthorYounghoon Lim-
dc.contributor.affiliatedAuthorYangheon Lee-
dc.contributor.affiliatedAuthorDalmin Bae-
dc.contributor.affiliatedAuthorY Shin-
dc.identifier.doi10.1088/1367-2630/ac8656-
dc.identifier.bibliographicCitationNEW JOURNAL OF PHYSICS, v.24, no.8-
dc.relation.isPartOfNEW JOURNAL OF PHYSICS-
dc.citation.titleNEW JOURNAL OF PHYSICS-
dc.citation.volume24-
dc.citation.number8-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaPhysics-
dc.relation.journalWebOfScienceCategoryPhysics, Multidisciplinary-
dc.subject.keywordPlusSUPERFLUID HE-4-
dc.subject.keywordPlusPOTENTIAL FLOW-
dc.subject.keywordPlusTRANSITION-
dc.subject.keywordPlusTURBULENCE-
dc.subject.keywordPlusDRAG-
dc.subject.keywordPlusHELIUM-
dc.subject.keywordAuthorBose-Einstein condensates-
dc.subject.keywordAuthorcritical superfluid dynamics-
dc.subject.keywordAuthorquantum vortex shedding-
dc.subject.keywordAuthorsuperfluidity-
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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