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DC Field | Value | Language |
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dc.citation.number | 12 | - |
dc.citation.startPage | 1550100 | - |
dc.citation.title | INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS | - |
dc.citation.volume | 24 | - |
dc.contributor.author | Lim, Yeunhwan | - |
dc.contributor.author | Hyun, Chang Ho | - |
dc.contributor.author | Kwak, Kyujin | - |
dc.contributor.author | Lee, Chang-Hwan | - |
dc.date.accessioned | 2023-12-22T00:18:16Z | - |
dc.date.available | 2023-12-22T00:18:16Z | - |
dc.date.created | 2016-01-19 | - |
dc.date.issued | 2015-12 | - |
dc.description.abstract | We consider the so-called hyperon puzzle of neutron star (NS). We employ Skyrme force models for the description of in-medium nucleon-nucleon (NN), nucleon-Lambda hyperon (N Lambda) and Lambda-Lambda (Lambda Lambda) interactions. A phenomenological finite-range force (FRF) for the Lambda Lambda interaction is considered as well. Equation of state (EoS) of NS matter is obtained in the framework of density functional theory, and Tolman-Oppenheimer-Volkoff (TOV) equations are solved to obtain the mass-radius relations of NSs. It has been generally known that the existence of hyperons in the NS matter is not well supported by the recent discovery of large-mass NSs (M similar or equal to 2 M-circle dot) since hyperons make the EoS softer than the one without them. For the selected interaction models, N Lambda interactions reduce the maximum mass of NS by about 30%, while Lambda Lambda interactions can give about 10% enhancement. Consequently, we find that some Skyrme force models predict the maximum mass of NS consistent with the observation of 2 M-circle dot NSs, and at the same time satisfy observationally constrained mass-radius relations. | - |
dc.identifier.bibliographicCitation | INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS, v.24, no.12, pp.1550100 | - |
dc.identifier.doi | 10.1142/S0218301315501001 | - |
dc.identifier.issn | 0218-3013 | - |
dc.identifier.scopusid | 2-s2.0-84953334041 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/18192 | - |
dc.identifier.url | http://www.worldscientific.com/doi/abs/10.1142/S0218301315501001?src=recsys& | - |
dc.identifier.wosid | 000367530300010 | - |
dc.language | 영어 | - |
dc.publisher | WORLD SCIENTIFIC PUBL CO PTE LTD | - |
dc.title | Hyperon puzzle of neutron stars with Skyrme force models | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Physics, Nuclear; Physics, Particles & Fields | - |
dc.relation.journalResearchArea | Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Hyperons | - |
dc.subject.keywordAuthor | neutron stars | - |
dc.subject.keywordAuthor | nuclear matter | - |
dc.subject.keywordPlus | DOUBLE-LAMBDA HYPERNUCLEI | - |
dc.subject.keywordPlus | EQUATION-OF-STATE | - |
dc.subject.keywordPlus | MASSES | - |
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