Chiral Symmetry Restoration and Deconfinement to Quark Matter in Neutron Stars

被引：12

作者：

Dexheimer, V. A. ^{[1
]}

Schramm, S. ^{[2
]}

机构：

[1] Gettysburg Coll, Dept Phys, Gettysburg, PA 17325 USA

[2] Goethe Univ Frankfurt, CSC, FIAS, ITP, Frankfurt, Germany

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2010年 / 199卷

关键词：

DYNAMICAL MODEL; ANALOGY;

D O I：

10.1016/j.nuclphysbps.2010.02.051

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We describe an extension of the hadronic SU(3) non-linear sigma model to include quarks. As a result, we obtain an effective model which interpolates between hadronic and quark degrees of freedom. The new parameters and the potential for the Polyakov loop (used as the order parameter for deconfinement) are calibrated in order to fit lattice QCD data and reproduce the QCD phase diagram. Finally, the equation of state provided by the model, combined with gravity through the inclusion of general relativity, is used to make predictions for neutron stars.

引用

页码：319 / 324

页数：6

共 25 条

[1] GROUND STATE OF MATTER AT HIGH DENSITIES - EQUATION OF STATE AND STELLAR MODELS [J].

BAYM, G ;

PETHICK, C ;

SUTHERLAND, P .

ASTROPHYSICAL JOURNAL, 1971, 170 (02) :299-+

[2]

BONANNO L, ARXIV09090924NUCLTH, P14002

[3]

BONANNO L, ARXIV08054188NUCLTH

[4] NJL-model analysis of dense quark matter [J].

Buballa, M .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2005, 407 (4-6) :205-376

[5]

Carter G, 1996, NUCL PHYS A, V608, P514

[6] Proto-neutron and neutron stars in a chiral SU(3) model [J].

Dexheimer, V. ;

Schramm, S. .

ASTROPHYSICAL JOURNAL, 2008, 683 (02) :943-948

[7]

Fodor Z, 2004, J HIGH ENERGY PHYS, DOI 10.1088/1126-6708/2004/04/050

[8] Chiral effective model with the Polyakov loop [J].

Fukushima, K .

PHYSICS LETTERS B, 2004, 591 (3-4) :277-284

[9] NEUTRON-STARS IN THE DERIVATIVE COUPLING MODEL [J].

GLENDENNING, NK ;

WEBER, F ;

MOSZKOWSKI, SA .

PHYSICAL REVIEW C, 1992, 45 (02) :844-855

[10] 1ST-ORDER PHASE-TRANSITIONS WITH MORE THAN ONE CONSERVED CHARGE - CONSEQUENCES FOR NEUTRON-STARS [J].

GLENDENNING, NK .

PHYSICAL REVIEW D, 1992, 46 (04) :1274-1287

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