Hybrid stars with the Dyson-Schwinger quark model

被引：72

作者：

Chen, H. ^{[1
]}

Baldo, M.

Burgio, G. F.

Schulze, H. -J.

机构：

[1] Univ Catania, INFN Sez Catania, I-95123 Catania, Italy

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 10期

关键词：

EQUATION-OF-STATE; BRUECKNER-GOLDSTONE EXPANSION; HEAVY-ION COLLISIONS; NUCLEAR-MATTER; PHASE-TRANSITIONS; HADRON PHYSICS; NEUTRON-STARS; GROUND-STATE; QCD; 3-BODY;

D O I：

10.1103/PhysRevD.84.105023

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the hadron-quark phase transition in the interior of neutron stars. For the hadronic sector, we use a microscopic equation of state involving nucleons and hyperons derived within the Brueckner-Hartree-Fock many-body theory with realistic two-body and three-body forces. For the description of quark matter, we employ the Dyson-Schwinger approach and compare with the MIT bag model. We calculate the structure of neutron star interiors comprising both phases and find that with the Dyson-Schwinger model, the hadron-quark phase transition takes place only when hyperons are excluded, and that a two-solar-mass hybrid star is possible only if the nucleonic equation of state is stiff enough.

引用

页数：10

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