Academic Journal
NJL-chiral soliton and the nucleon equation of state at supra-saturation density: impact of chiral symmetry restoration.
| Τίτλος: | NJL-chiral soliton and the nucleon equation of state at supra-saturation density: impact of chiral symmetry restoration. |
|---|---|
| Συγγραφείς: | Pradhan, Bikram Keshari, Chanfray, Guy, Hansen, Hubert, Margueron, Jérôme |
| Πηγή: | European Physical Journal A -- Hadrons & Nuclei; Aug2026, Vol. 62 Issue 8, p1-26, 26p |
| Θεματικοί όροι: | Nambu-Jona-Lasinio model, Equations of state, Topological defects (Physics), Vector mesons, Chirality of nuclear particles, Particles (Nuclear physics), Nuclear density, Solitons |
| Περίληψη: | It has been conjectured that, at sufficiently high baryon densities, the equation of state (EoS) of bulk nuclear matter can be identified with that of the nucleon core. In this work, we illustrate how the energy density and pressure distributions inside individual nucleons can be utilized to construct the EoS of supra-dense matter. In our framework, nucleons arise as topological solitons stabilized by vector mesons, which are dynamically generated through the path integral bosonization of an underlying Nambu–Jona-Lasinio (NJL) model. The restoration of chiral symmetry is implemented dynamically via a self-consistent, density dependent scalar field, which modifies the (isovector) and (isoscalar) channels of the soliton. We analyze the resulting changes in soliton properties for different NJL parameter sets and demonstrate that the progressive restoration of chiral symmetry leads to a stiffening of the soliton-based EoS, making it compatible with existing neutron star EoSs. An EoS constructed from the solutions of the energy-density and pressure profiles at the center of the nucleon is also explored. [ABSTRACT FROM AUTHOR] |
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| Βάση Δεδομένων: | Complementary Index |
| FullText | Text: Availability: 0 CustomLinks: – Url: https://dx.doi.org/doi:10.1140/epja/s10050-026-01944-y Name: EDS - Springer Nature Journals (s7799221) Category: fullText Text: View record at Springer – Url: https://resolver.ebsco.com/c/fiv2js/result?sid=EBSCO:edb&genre=article&issn=14346001&ISBN=&volume=62&issue=8&date=20260801&spage=1&pages=1-26&title=European Physical Journal A -- Hadrons & Nuclei&atitle=NJL-chiral%20soliton%20and%20the%20nucleon%20equation%20of%20state%20at%20supra-saturation%20density%3A%20impact%20of%20chiral%20symmetry%20restoration.&aulast=Pradhan%2C%20Bikram%20Keshari&id=DOI:10.1140/epja/s10050-026-01944-y Name: Full Text Finder (for New FTF UI) (ns324271) Category: fullText Text: Full Text Finder MouseOverText: Full Text Finder |
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| Items | – Name: Title Label: Title Group: Ti Data: NJL-chiral soliton and the nucleon equation of state at supra-saturation density: impact of chiral symmetry restoration. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Pradhan%2C+Bikram+Keshari%22">Pradhan, Bikram Keshari</searchLink><br /><searchLink fieldCode="AR" term="%22Chanfray%2C+Guy%22">Chanfray, Guy</searchLink><br /><searchLink fieldCode="AR" term="%22Hansen%2C+Hubert%22">Hansen, Hubert</searchLink><br /><searchLink fieldCode="AR" term="%22Margueron%2C+Jérôme%22">Margueron, Jérôme</searchLink> – Name: TitleSource Label: Source Group: Src Data: European Physical Journal A -- Hadrons & Nuclei; Aug2026, Vol. 62 Issue 8, p1-26, 26p – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Nambu-Jona-Lasinio+model%22">Nambu-Jona-Lasinio model</searchLink><br /><searchLink fieldCode="DE" term="%22Equations+of+state%22">Equations of state</searchLink><br /><searchLink fieldCode="DE" term="%22Topological+defects+%28Physics%29%22">Topological defects (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Vector+mesons%22">Vector mesons</searchLink><br /><searchLink fieldCode="DE" term="%22Chirality+of+nuclear+particles%22">Chirality of nuclear particles</searchLink><br /><searchLink fieldCode="DE" term="%22Particles+%28Nuclear+physics%29%22">Particles (Nuclear physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+density%22">Nuclear density</searchLink><br /><searchLink fieldCode="DE" term="%22Solitons%22">Solitons</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: It has been conjectured that, at sufficiently high baryon densities, the equation of state (EoS) of bulk nuclear matter can be identified with that of the nucleon core. In this work, we illustrate how the energy density and pressure distributions inside individual nucleons can be utilized to construct the EoS of supra-dense matter. In our framework, nucleons arise as topological solitons stabilized by vector mesons, which are dynamically generated through the path integral bosonization of an underlying Nambu–Jona-Lasinio (NJL) model. The restoration of chiral symmetry is implemented dynamically via a self-consistent, density dependent scalar field, which modifies the (isovector) and (isoscalar) channels of the soliton. We analyze the resulting changes in soliton properties for different NJL parameter sets and demonstrate that the progressive restoration of chiral symmetry leads to a stiffening of the soliton-based EoS, making it compatible with existing neutron star EoSs. An EoS constructed from the solutions of the energy-density and pressure profiles at the center of the nucleon is also explored. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of European Physical Journal A -- Hadrons & Nuclei 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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1140/epja/s10050-026-01944-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 26 StartPage: 1 Subjects: – SubjectFull: Nambu-Jona-Lasinio model Type: general – SubjectFull: Equations of state Type: general – SubjectFull: Topological defects (Physics) Type: general – SubjectFull: Vector mesons Type: general – SubjectFull: Chirality of nuclear particles Type: general – SubjectFull: Particles (Nuclear physics) Type: general – SubjectFull: Nuclear density Type: general – SubjectFull: Solitons Type: general Titles: – TitleFull: NJL-chiral soliton and the nucleon equation of state at supra-saturation density: impact of chiral symmetry restoration. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Pradhan, Bikram Keshari – PersonEntity: Name: NameFull: Chanfray, Guy – PersonEntity: Name: NameFull: Hansen, Hubert – PersonEntity: Name: NameFull: Margueron, Jérôme IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 14346001 Numbering: – Type: volume Value: 62 – Type: issue Value: 8 Titles: – TitleFull: European Physical Journal A -- Hadrons & Nuclei Type: main |
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