Neutron fraction and neutrino mean free path predictions in relativistic mean field models
Abstract
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.
 Publication:

Physical Review C
 Pub Date:
 December 2004
 DOI:
 10.1103/PhysRevC.70.068801
 arXiv:
 arXiv:nuclth/0411034
 Bibcode:
 2004PhRvC..70f8801H
 Keywords:

 26.60.+c;
 13.15.+g;
 21.30.Fe;
 25.30.Pt;
 Nuclear matter aspects of neutron stars;
 Neutrino interactions;
 Forces in hadronic systems and effective interactions;
 Neutrino scattering;
 Nuclear Theory;
 Astrophysics;
 High Energy Physics  Phenomenology
 EPrint:
 4 pages, 5 figures, accepted for publication in Phys. Rev. C