Quark-hadron crossover equations of state for neutron stars: Constraining the chiral invariant mass in a parity doublet model
Quark-hadron crossover equations of state for neutron stars: Constraining the chiral invariant mass in a parity doublet model
复制标题
中子星的夸克-强子交叉状态方程:在宇称双态模型中约束手性不变质量
DOI:
10.1103/physrevc.103.045205
复制
发表时间:
2020-11
影响因子:
3.1
通讯作者:
Masayasu Harada
中科院分区:
文献类型:
--
作者:
Takuya Minamikawa;Toru Kojo;Masayasu Harada
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 restrictedas600MeVm0 900MeV.
登录
查看更多内容
影响因子:
5
作者:
C. Sasaki;H. Lee;Won-Gi Paeng;M. Rho
通讯作者:
C. Sasaki;H. Lee;Won-Gi Paeng;M. Rho
DOI:
10.1016/s0370-1573(03)00139-x
发表时间:
2003-02
期刊:
arXiv: High Energy Physics - Phenomenology
影响因子:
--
作者:
M. Harada;K. Yamawaki
通讯作者:
M. Harada;K. Yamawaki
影响因子:
5
作者:
T. Yamazaki;M. Harada
通讯作者:
T. Yamazaki;M. Harada
影响因子:
3.1
作者:
T. Yamazaki;M. Harada
通讯作者:
T. Yamazaki;M. Harada
影响因子:
6.5
作者:
Michał Marczenko;D. Blaschke;K. Redlich;C. Sasaki
通讯作者:
Michał Marczenko;D. Blaschke;K. Redlich;C. Sasaki