scholarly journals Relativistic mean-field models with scaled hadron masses and couplings: Hyperons and maximum neutron star mass

2016 ◽  
Vol 950 ◽  
pp. 64-109 ◽  
Author(s):  
K.A. Maslov ◽  
E.E. Kolomeitsev ◽  
D.N. Voskresensky
Keyword(s):  
Neutron Star ◽  
Mean Field ◽  
Star Mass ◽  
Relativistic Mean Field ◽  
Mean Field Models ◽  
Neutron Star Mass ◽  
Hadron Masses

NEUTRON STAR MASS CORRELATION WITH SOUND VELOCITY AND INCOMPRESSIBILITY AT THE STAR CENTER IN THE POLYTROPIC APPROXIMATION

2010 ◽  
Vol 19 (08n10) ◽  
pp. 1575-1582
Author(s):  
L. FERRARI ◽  
P. C. R. ROSSI ◽  
M. MALHEIRO
Keyword(s):  
Neutron Star ◽  
Equation Of State ◽  
Nuclear Matter ◽  
Sound Velocity ◽  
Mean Field ◽  
Star Mass ◽  
Mean Field Models ◽  
Neutron Star Mass ◽  
Analytic Expressions ◽  
Walecka Model

In this paper we use a polytropic approximation to the equation of state for the interior of neutrons stars, described by relativistic hadronic mean field models. In this approximation, it is possible to obtain analytic expressions for the sound velocity and the incompressibility at the star center. We found a correlation between these quantities and the star mass. Using two well-known parametrizations of the nonlinear Walecka model for nuclear matter composed only of protons, neutrons and electron in β equilibrium, we obtain for a star mass of 1.43 M⊙ a central incompressibility Kc = (3000±100), around ten times the nuclear matter incompressibility, and a central sound velocity (v/c)2 ~ 0.3.

scholarly journals Neutron star deformability with hyperonization in density-dependent relativistic mean-field models

2021 ◽  
Vol 104 (6) ◽  
Author(s):  
W. Z. Shangguan ◽  
Z. Q. Huang ◽  
S. N. Wei ◽  
W. Z. Jiang
Keyword(s):  
Neutron Star ◽  
Mean Field ◽  
Density Dependent ◽  
Relativistic Mean Field ◽  
Mean Field Models

scholarly journals Delta isobars in relativistic mean-field models with σ-scaled hadron masses and couplings

2017 ◽  
Vol 961 ◽  
pp. 106-141 ◽  
Author(s):  
E.E. Kolomeitsev ◽  
K.A. Maslov ◽  
D.N. Voskresensky
Keyword(s):  
Mean Field ◽  
Relativistic Mean Field ◽  
Mean Field Models ◽  
Hadron Masses

scholarly journals Hyperons in neutron star matter within relativistic mean-field models

2015 ◽  
Vol 46 (5) ◽  
pp. 830-834 ◽  
Author(s):  
M. Oertel ◽  
C. Providencia ◽  
F. Gulminelli ◽  
A. R. Raduta
Keyword(s):  
Neutron Star ◽  
Mean Field ◽  
Neutron Star Matter ◽  
Relativistic Mean Field ◽  
Mean Field Models
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