### 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.

Original language | English |
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Pages (from-to) | 688011-688014 |

Number of pages | 4 |

Journal | Physical Review C - Nuclear Physics |

Volume | 70 |

Issue number | 6 |

DOIs | |

Publication status | Published - 1 Dec 2004 |

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## Cite this

Hutauruk, P. T. P., Williams, C. K., Sulaksono, A., & Mart, T. (2004). Neutron fraction and neutrino mean free path predictions in relativistic mean field models.

*Physical Review C - Nuclear Physics*,*70*(6), 688011-688014. https://doi.org/10.1103/PhysRevC.70.068801