2004/11/10 by P. T. P. Hutauruk, Parada T. P. Hutauruk, C. Williams +3
Mathematics · Physics and Astronomy · #Anomaly (physics) #Astrophysics #Equation of state #Field (mathematics) #Fraction (chemistry) #Isovector #Mathematics #Mean field theory #Mean free path #Neutrino #Neutrino Physics Research #Neutron #Neutron star #Nuclear physics #Nuclear physics research studies #Nucleon #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Statistical physics #astro-ph #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.70.068801
published as Phys.Rev. C70 (2004) 068801 · 4 pages, 5 figures, accepted for publication in Phys. Rev. C
arxiv created 2004/11/10 · openalex publication_date 2004/12/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The equation of state (EOS) of dense matter and neutrino mean free path (NMFP) in a neutron star have been studied by using relativistic mean field models motivated by effective field theory. It is found that the models predict too large proton fractions, although one of the models (G2) predicts an acceptable EOS. This is caused by the isovector terms. Except G2, the other two models predict anomalous NMFP's. In order to minimize the anomaly, besides an acceptable EOS, a large M* is favorable. A model with large M* retains the regularity in the NMFP even for a small neutron fraction.