Revisiting the properties of superfluid and normal liquid 4He using ab initio potentials.
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| Title: | Revisiting the properties of superfluid and normal liquid 4He using ab initio potentials. |
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| Authors: | Morresi, Tommaso1 (AUTHOR), Garberoglio, Giovanni1 (AUTHOR) garberoglio@ectstar.eu |
| Source: | Journal of Low Temperature Physics. May2025, Vol. 219 Issue 3, p103-122. 20p. |
| Subjects: | Monte Carlo method, Superfluidity, Helium, Liquids |
| Abstract: | We investigate the properties of liquid 4 He in both the normal and superfluid phases using path-integral Monte Carlo simulations and recently developed ab initio potentials that incorporate pair, three-body, and four-body interactions. By focusing on the energy per particle as a representative observable, we use a perturbative approach to quantify the individual contributions of the many-body potentials and systematically propagate their associated uncertainties. Our findings indicate that the three-body and four-body potentials contribute to the total energy by approximately 4% and 0.5%, respectively. However, the primary limitation in achieving highly accurate first principles calculations arises from the uncertainty in the four-body potential, which currently dominates the propagated uncertainty. In addition to the energy per particle, we analyze other key observables, including the superfluid fraction, condensed fraction, and pair distribution function, all of which demonstrate excellent agreement with experimental measurements. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Low Temperature Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 184870854 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Revisiting the properties of superfluid and normal liquid <superscript>4</superscript>He using ab initio potentials. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Morresi%2C+Tommaso%22">Morresi, Tommaso</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Garberoglio%2C+Giovanni%22">Garberoglio, Giovanni</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> garberoglio@ectstar.eu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Low+Temperature+Physics%22">Journal of Low Temperature Physics</searchLink>. May2025, Vol. 219 Issue 3, p103-122. 20p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Monte+Carlo+method%22">Monte Carlo method</searchLink><br /><searchLink fieldCode="DE" term="%22Superfluidity%22">Superfluidity</searchLink><br /><searchLink fieldCode="DE" term="%22Helium%22">Helium</searchLink><br /><searchLink fieldCode="DE" term="%22Liquids%22">Liquids</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: We investigate the properties of liquid 4 He in both the normal and superfluid phases using path-integral Monte Carlo simulations and recently developed ab initio potentials that incorporate pair, three-body, and four-body interactions. By focusing on the energy per particle as a representative observable, we use a perturbative approach to quantify the individual contributions of the many-body potentials and systematically propagate their associated uncertainties. Our findings indicate that the three-body and four-body potentials contribute to the total energy by approximately 4% and 0.5%, respectively. However, the primary limitation in achieving highly accurate first principles calculations arises from the uncertainty in the four-body potential, which currently dominates the propagated uncertainty. In addition to the energy per particle, we analyze other key observables, including the superfluid fraction, condensed fraction, and pair distribution function, all of which demonstrate excellent agreement with experimental measurements. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Low Temperature Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=184870854 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10909-025-03283-6 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 20 StartPage: 103 Subjects: – SubjectFull: Monte Carlo method Type: general – SubjectFull: Superfluidity Type: general – SubjectFull: Helium Type: general – SubjectFull: Liquids Type: general Titles: – TitleFull: Revisiting the properties of superfluid and normal liquid 4He using ab initio potentials. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Morresi, Tommaso – PersonEntity: Name: NameFull: Garberoglio, Giovanni IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00222291 Numbering: – Type: volume Value: 219 – Type: issue Value: 3 Titles: – TitleFull: Journal of Low Temperature Physics Type: main |
| ResultId | 1 |
