Hadron-quark Pasta Phase in Massive Neutron Stars
Hadron-quark Pasta Phase in Massive Neutron Stars
复制标题
大质量中子星中的强子夸克面食相
DOI：
10.3847/1538-4357/ac30dd
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发表时间：
2021-11
期刊：
影响因子：
--
通讯作者：
Hong Shen
中科院分区：
文献类型：
--
作者：
Min Ju;Jinniu Hu;Hong Shen
The structured hadron-quark mixed phase, known as the pasta phase, is expected to appear in the core of massive neutron stars. Motivated by the recent advances in astrophysical observations, we explore the possibility of the appearance of quarks inside neutron stars and check its compatibility with current constraints. We investigate the properties of the hadron-quark pasta phases and their influences on the equation of state (EOS) for neutron stars. In this work, we extend the energy minimization (EM) method to describe the hadron-quark pasta phase, where the surface and Coulomb contributions are included in the minimization procedure. By allowing different electron densities in the hadronic and quark matter phases, the total electron chemical potential with the electric potential remains constant, and local β equilibrium is achieved inside the Wigner–Seitz cell. The mixed phase described in the EM method shows the features lying between the Gibbs and Maxwell constructions, which is helpful for understanding the transition from the Gibbs construction to the Maxwell construction with increasing surface tension. We employ the relativistic mean-field model to describe the hadronic matter, while the quark matter is described by the MIT bag model with vector interactions. It is found that the vector interactions among quarks can significantly stiffen the EOS at high densities and help enhance the maximum mass of neutron stars. Other parameters like the bag constant can also affect the deconfinement phase transition in neutron stars. Our results show that hadron-quark pasta phases may appear in the core of massive neutron stars that can be compatible with current observational constraints.
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影响因子：
19.6
作者：
Annala, Eemeli;Gorda, Tyler;Vuorinen, Aleksi
通讯作者：
Vuorinen, Aleksi
DOI：
10.1016/j.physrep.2015.12.005
发表时间：
2015-12
期刊：
arXiv: Solar and Stellar Astrophysics
影响因子：
--
作者：
J. Lattimer;M. Prakash
通讯作者：
J. Lattimer;M. Prakash
影响因子：
2.9
作者：
L. Lopes;Carline Biesdorf;D. Menezes
通讯作者：
L. Lopes;Carline Biesdorf;D. Menezes
影响因子：
4.4
作者：
J. Li;A. Sedrakian;F. Weber
通讯作者：
J. Li;A. Sedrakian;F. Weber
影响因子：
4.8
作者：
E. Most;L. J. Papenfort;L. R. Weih;Luciano Rezzolla;Luciano Rezzolla
通讯作者：
E. Most;L. J. Papenfort;L. R. Weih;Luciano Rezzolla;Luciano Rezzolla