Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2000-08-21
Phys.Rev. C64 (2001) 025804
Physics
Nuclear Physics
Nuclear Theory
28 pages, 11 figures
Scientific paper
10.1103/PhysRevC.64.025804
The density dependent hadron field (DDRH) theory, previously applied to isospin nuclei and hypernuclei is used to describe $\beta$-stable matter and neutron stars under consideration of the complete baryon octet. The meson-hyperon vertices are derived from Dirac-Brueckner calculations of nuclear matter and extended to hyperons. We examine properties of density dependent interactions derived from the Bonn A and from the Groningen NN potential as well as phenomenological interactions. The consistent treatment of the density dependence introduces rearrangement terms in the expression for the baryon chemical potential. This leads to a more complex condition for the $\beta$-equilibrium compared to standard relativistic mean field (RMF) approaches. We find a strong dependence of the equation of state and the particle distribution on the choice of the vertex density dependence. Results for neutron star masses and radii are presented. We find a good agreement with other models for the maximum mass. Radii are smaller compared to RMF models and indicate a closer agreement with results of non-relativistic Brueckner calculations.
Hofmann Franziska
Keil Christoph M.
Lenske Horst
No associations
LandOfFree
Application of the density dependent hadron field theory to neutron star matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Application of the density dependent hadron field theory to neutron star matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Application of the density dependent hadron field theory to neutron star matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-314381