A dynamical, confining model and hot quark stars

被引：58

作者：

Blaschke, D

Grigorian, H

Poghosyan, G

Roberts, CD

Schmidt, S

机构：

[1] Univ Rostock, Fachbereich Phys, D-18051 Rostock, Germany

[2] Yerevan State Univ, Dept Phys, Yerevan 375025, Armenia

[3] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

来源：

PHYSICS LETTERS B | 1999年 / 450卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

Dyson-Schwinger equations; confinement; dynamical chiral symmetry breaking; bag model; quark matter equation of state; quark stars;

D O I：

10.1016/S0370-2693(99)00007-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We explore the consequences of an equation of the state (EOS) obtained in a confining Dyson-Schwinger equation model of QCD for the structure and stability of nonstrange quark stars at finite-T, and compare the results with those obtained using a bag-model EOS. Both models support a temperature profile that varies over the star's volume and the consequences of this are model independent. However, in our model the analogue of the bag pressure is (T, mu)-dependent, which is not the case in the bag model. This is a significant qualitative difference and comparing the results effects a primary goal of elucidating the sensitivity of quark star properties to the form of the EOS. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：207 / 214

页数：8

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