COMPACT STARS IN HADRON AND QUARK-HADRON MODELS

被引:1
作者
Schramm, S. [1 ]
Dexheimer, V. A. [2 ]
机构
[1] Goethe Univ Frankfurt, FIAS, D-60438 Frankfurt, Germany
[2] Gettysburg Coll, Dept Phys, Gettysburg, PA 17325 USA
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2010年 / 19卷 / 8-10期
关键词
Chiral symmetry; neutron star; quark star; NEUTRON-STARS; NUCLEI;
D O I
10.1142/S0218271810017810
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate strongly interacting dense matter and neutron stars using a flavor-SU(3) approach based on a nonlinear realization of chiral symmetry. We study chiral symmetry restoration and the equation of state of stellar matter and determine neutron star properties using different sets of degrees of freedom. Finally, we include quarks in the model approach. We show the resulting phase diagram as well as hybrid star solutions for this model.
引用
收藏
页码:1455 / 1462
页数:8
相关论文
共 26 条
[1]  
BONANNO L, ARXIV08054188NUCLTH
[2]   NJL-model analysis of dense quark matter [J].
Buballa, M .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2005, 407 (4-6) :205-376
[3]   LINEAR SIGMA-MODEL WITH PARITY DOUBLING [J].
DETAR, C ;
KUNIHIRO, T .
PHYSICAL REVIEW D, 1989, 39 (09) :2805-2808
[4]   Neutron stars within the SU(2) parity doublet model [J].
Dexheimer, V. ;
Pagliara, G. ;
Tolos, L. ;
Schaffner-Bielich, J. ;
Schramm, S. .
EUROPEAN PHYSICAL JOURNAL A, 2008, 38 (01) :105-113
[5]   Proto-neutron and neutron stars in a chiral SU(3) model [J].
Dexheimer, V. ;
Schramm, S. .
ASTROPHYSICAL JOURNAL, 2008, 683 (02) :943-948
[6]   Nuclear matter and neutron stars in a parity doublet model [J].
Dexheimer, V. ;
Schramm, S. ;
Zschiesche, D. .
PHYSICAL REVIEW C, 2008, 77 (02)
[7]  
DEXHEIMER V, PHYS REV C UNPUB
[8]   Neutron Stars as a Probe for Dense Matter [J].
Dexheimer, V. A. ;
Schramm, S. .
NUCLEAR PHYSICS A, 2009, 827 (1-4) :579C-581C
[9]  
Fodor Z, 2004, J HIGH ENERGY PHYS, DOI 10.1088/1126-6708/2004/04/050
[10]   Chiral effective model with the Polyakov loop [J].
Fukushima, K .
PHYSICS LETTERS B, 2004, 591 (3-4) :277-284