Compact stars with strongly coupled quark matter in a strong magnetic field

被引：4

作者：

Fogaca, D. A. ^{[1
]}

Sanches, S. M., Jr. ^{[1
]}

Motta, T. F. ^{[1
]}

Navarra, F. S. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Fis, Rua Matao Travessa R 187, BR-05508090 Sao Paulo, SP, Brazil

来源：

PHYSICAL REVIEW C | 2016年 / 94卷 / 05期

基金：

巴西圣保罗研究基金会;

关键词：

NEUTRON-STAR; DENSE; EQUATION; QCD;

D O I：

10.1103/PhysRevC.94.055805

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Some time ago we derived from the QCD Lagrangian an equation of state (EOS) for cold quark matter which can be considered an improved version of the MIT bag model EOS. Compared to the latter, our equation of state reaches higher values of the pressure at comparable baryon densities. This feature is due to perturbative corrections and also to nonperturbative effects. Laterwe applied this EOS to the study of compact stars, discussing the absolute stability of quark matter and computing the mass-radius relation for self-bound (strange) stars. We found maximum masses of the sequences with more than two solarmasses, in agreement with recent experimental observations. In the present work we include the magnetic field in the equation of state and study how it changes the stability conditions and the mass-radius curves.

引用

页数：10

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