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Pair Potential with Submillikelvin Uncertainties and Nonadiabatic Treatment of the Halo State of the Helium Dimer

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cris.lastimport.scopus2024-02-12T20:47:24Z
dc.abstract.enThe pair potential for helium is computed with accuracy improved by an order of magnitude relative to the best previous determination. For the well region, its uncertainties are now below 1 millikelvin. The main improvement is due to the use of explicitly correlated wave functions at the nonrelativistic Born-Oppenheimer (BO) level of theory. The diagonal BO and the relativistic corrections are obtained from large full configuration interaction calculations. Nonadiabatic perturbation theory is used to predict the properties of the halo state of the helium dimer. Its binding energy and the average value of the interatomic distance are found to be 138.9(5) neV and 47.13(8) Å. The binding energy agrees with its first experimental determination of 151.9(13.3) neV [Zeller et al., Proc. Natl. Acad. Sci. U.S.A. 113, 14651 (2016)].
dc.affiliationUniwersytet Warszawski
dc.contributor.authorPrzybytek, Michał
dc.contributor.authorSzalewicz, Krzysztof
dc.contributor.authorCencek, Wojciech
dc.contributor.authorJeziorski, Bogumił
dc.date.accessioned2024-01-25T16:12:13Z
dc.date.available2024-01-25T16:12:13Z
dc.date.issued2017
dc.description.financeNie dotyczy
dc.description.number12
dc.description.volume119
dc.identifier.doi10.1103/PHYSREVLETT.119.123401
dc.identifier.issn0031-9007
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/115404
dc.identifier.weblinkhttps://link.aps.org/doi/10.1103/PhysRevLett.119.123401
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofPhysical Review Letters
dc.relation.pages123401
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titlePair Potential with Submillikelvin Uncertainties and Nonadiabatic Treatment of the Halo State of the Helium Dimer
dc.typeJournalArticle
dspace.entity.typePublication