2002/12/13 by Ilona Bednarek, I. Bednarek, A. Brzezina +2 · 1 citation
Engineering · Physics and Astronomy · #Astrophysics #Asymmetry #Atomic and Subatomic Physics Research #Condensed matter physics #Equation of state #Field (mathematics) #Geophysics and Sensor Technology #Magnetic field #Mean field theory #Meson #Neutron #Neutron star #Nuclear physics #Particle physics #Physics #Proton #Pulsars and Gravitational Waves Research #Quantum electrodynamics #Quantum mechanics #RADIUS #Star (game theory) #astro-ph #nucl-th
paper · pdf · doi:10.1016/s0375-9474(02)01404-5
published as Nucl.Phys. A716 (2003) 245-256 · 14 pages, latex2e (elsart), 4 figures, to appear in Nuclear Physics A
arxiv created 2002/12/13 · openalex publication_date 2003/02/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Using the Relativistic Mean Field Theory (RMF) it is shown that different proton fraction which is directly connected with the neutron excess and with the asymmetry of the system affects proto-neutron stars parameters and changes their composition. The obtained form of the equation of state allows to construct the mass-radius relations and shows that the increasing asymmetry creates more compact stars. The inclusion of delta meson together with nonlinear vector meson interaction terms and magnetic field make this effect even stronger.