Neutron Star Properties in the Chiral Quark-Meson Coupling Model

被引：5

作者：

Miyatsu, Tsuyoshi ^{[1
]}

Saito, Koichi ^{[2
]}

机构：

[1] Soongsil Univ, Dept Phys, Seoul 156743, South Korea

[2] Tokyo Univ Sci, Fac Sci & Technol, Dept Phys, Noda, Chiba 2788510, Japan

来源：

FEW-BODY SYSTEMS | 2013年 / 54卷 / 7-10期

关键词：

Neutron Star; Maximum Mass; Massive Neutron Star; Nuclear Symmetry Energy; Strange Meson;

D O I：

10.1007/s00601-012-0567-z

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the properties of neutron stars using the chiral quark-meson coupling model, in which the quark-quark hyperfine interaction due to the exchanges of gluon and pion based on chiral symmetry is considered. We also examine the effects of hyperons and Delta-isobars in a neutron star. Extending the SU(6) spin-flavor symmetry to more general SU(3) flavor symmetry in the vector-meson couplings to baryons, the maximum mass of neutron star can reach the recently observed massive pulsar mass, . In this calculation, I > and I are generated in a neutron star, while I pound and Delta-isobars do not appear.

引用

页码：1591 / 1594

页数：4

共 7 条

[1] A two-solar-mass neutron star measured using Shapiro delay [J].

Demorest, P. B. ;

Pennucci, T. ;

Ransom, S. M. ;

Roberts, M. S. E. ;

Hessels, J. W. T. .

NATURE, 2010, 467 (7319) :1081-1083

[2] EQUATION OF STATE FOR MASSIVE NEUTRON STARS [J].

Katayama, Tetsuya ;

Miyatsu, Tsuyoshi ;

Saito, Koichi .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2012, 203 (02)

[3] Effects of Fock term, tensor coupling and baryon structure variation on a neutron star [J].

Miyatsu, Tsuyoshi ;

Katayama, Tetsuya ;

Saito, Koichi .

PHYSICS LETTERS B, 2012, 709 (03) :242-246

[4] Quark-meson coupling model with the cloudy bag [J].

Nagai, S. ;

Miyatsu, T. ;

Saito, K. ;

Tsushima, K. .

PHYSICS LETTERS B, 2008, 666 (03) :239-244

[5] Hypernuclear weak decay of C-12(Lambda) and B-11(Lambda) [J].

Noumi, H ;

Ajimura, S ;

Ejiri, H ;

Higashi, A ;

Kishimoto, T ;

Gill, DR ;

Lee, L ;

Olin, A ;

Fukuda, T ;

Hashimoto, O .

PHYSICAL REVIEW C, 1995, 52 (06) :2936-2945

[6]

Rijken TA, 2010, PROG THEOR PHYS SUPP, P14

[7] Nucleon and hadron structure changes in the nuclear medium and the impact on observables [J].

Saito, K. ;

Tsushima, K. ;

Thomas, A. W. .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 58, NO 1, 2007, 58 (01) :1-167

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