The effect of inclusion of A resonances in relativistic mean-field model with scaled hadron masses and coupling constants

被引：5

作者：

Maslov, K. A. ^{[1
]}

Kolomeitsev, E. E. ^{[2
]}

Voskresensky, D. N. ^{[1
]}

机构：

[1] Natl Res Nucl Univ MEPhI, Moscow Engn Phys Inst, Kashirskoe Highway 31, Moscow 115409, Russia

[2] Matej Bel Univ, Tajovskeho 40, Banska Bystrica 97401, Slovakia

来源：

INTERNATIONAL CONFERENCE ON PARTICLE PHYSICS AND ASTROPHYSICS | 2017年 / 798卷

基金：

俄罗斯基础研究基金会;

关键词：

EQUATION;

D O I：

10.1088/1742-6596/798/1/012070

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Knowledge of the equation of state of the baryon matter plays a decisive role in the description of neutron stars. With an increase of the baryon density the filling of Fermi seas of hyperons and Delta isobars becomes possible. Their inclusion into standard relativistic mean-field models results in a strong softening of the equation of state and a lowering of the maximum neutron star mass below the measured values. We extend a relativistic mean -field model with scaled hadron masses and coupling constants developed in our previous works and take into account now not only hyperons but also the Delta isobars. We analyze available empirical information to put constraints on coupling constants of Delta s to mesonic mean fields. We show that the resulting equation of state satisfies majority of presently known experimental constraints.

引用

页数：5

共 50 条

[1] Relativistic mean-field model with scaled hadron masses and couplings
Khvorostukhin, A. S.
Toneev, V. D.
Voskresensky, D. N.
[J]. NUCLEAR PHYSICS A, 2008, 813 (3-4) : 313 - 346
[2] Relativistic mean-field models with effective hadron masses and coupling constants, and ρ- condensation
Kolomeitsev, EE
Voskresensky, DN
[J]. NUCLEAR PHYSICS A, 2005, 759 (3-4) : 373 - 413
[3] Hyperons, Δ resonances and condensate of charged ρ mesons within relativistic mean-field models with scaled hadron masses and couplings
Maslov, K. A.
Kolomeitsev, E. E.
Voskresensky, D. N.
[J]. III INTERNATIONAL CONFERENCE ON LASER AND PLASMA RESEARCHES AND TECHNOLOGIES, 2018, 941
[4] Delta isobars in relativistic mean-field models with σ-scaled hadron masses and couplings
Kolomeitsev, E. E.
Maslov, K. A.
Voskresensky, D. N.
[J]. NUCLEAR PHYSICS A, 2017, 961 : 106 - 141
[5] Relativistic mean-field models with scaled hadron masses and couplings: Hyperons and maximum neutron star mass
Maslov, K. A.
Kolomeitsev, E. E.
Voskresensky, D. N.
[J]. NUCLEAR PHYSICS A, 2016, 950 : 64 - 109
[6] Viscosity of hadron matter within relativistic mean-field-based model with scaled hadron masses and couplings
A. S. Khvorostukhin
V. D. Toneev
D. N. Voskresensky
[J]. Physics of Atomic Nuclei, 2011, 74 : 650 - 658
[7] Viscosity of hadron matter within relativistic mean-field-based model with scaled hadron masses and couplings
Khvorostukhin, A. S.
Toneev, V. D.
Voskresensky, D. N.
[J]. PHYSICS OF ATOMIC NUCLEI, 2011, 74 (04) : 650 - 658
[8] Hyperon puzzle and the RMF model with scaled hadron masses and coupling constants
Kolomeitsev, E. E.
Maslov, K. A.
Voskresensky, D. N.
[J]. 15TH INTERNATIONAL CONFERENCE ON STRANGENESS IN QUARK MATTER (SQM2015), 2016, 668
[9] Comparative study of nuclear masses in the relativistic mean-field model
HUA XueMin 1
2 School of Physics and Nuclear Energy Engineering
[J]. Science China(Physics,Mechanics & Astronomy), 2012, (12) : 2414 - 2419
[10] Comparative study of nuclear masses in the relativistic mean-field model
XueMin Hua
TaiHua Heng
ZhongMing Niu
BaoHua Sun
JianYou Guo
[J]. Science China Physics, Mechanics and Astronomy, 2012, 55 : 2414 - 2419

← 1 2 3 4 5 →