| Item type |
itemtype_ver1(1) |
| 公開日 |
2021-12-08 |
| タイトル |
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タイトル |
Quark-hadron crossover equations of state for neutron stars: Constraining the chiral invariant mass in a parity doublet model |
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言語 |
en |
| 著者 |
Minamikawa, Takuya
Kojo, Toru
Harada, Masayasu
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利 |
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言語 |
en |
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権利情報 |
© 2021 American Physical Society |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
We construct an equation of state (EOS) for neutron stars by interpolating hadronic EOS at low density and quark EOS at high density. A hadronic model based on the parity doublet structure is used for hadronic matter and a quark model of Nambu–Jona-Lasinio type is for quark matter. We assume crossover between hadronic matter and quark matter in the color-flavor locked phase. The nucleon mass of the parity doublet model has a mass associated with the chiral symmetry breaking, and a chiral invariant mass m0 which is insensitive to the chiral condensate. The value of m0 affects the nuclear EOSs at low density, and has strong correlations with the radii of neutron stars. Using the constraint to the radius obtained by LIGO-Virgo and NICER, we find that m0 is restricted as 600MeV≲m0≲900MeV. |
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言語 |
en |
| 出版者 |
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出版者 |
American Physical Society |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプresource |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| 出版タイプ |
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|
出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1103/PhysRevC.103.045205 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
2469-9985 |
| 書誌情報 |
en : Physical Review C
巻 103,
号 4,
p. 045205,
発行日 2021-04-15
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| ファイル公開日 |
|
|
日付 |
2021-12-08 |
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日付タイプ |
Available |
PhysRevC_103_045205.pdf (851 KB)
