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Title: Density dependent hadronic models and the relation between neutron stars and neutron skin thickness

Abstract

In the present work, we investigate the main differences in the lead neutron skin thickness, binding energy, surface energy, and density profiles obtained with two different density dependent hadron models. Our results are calculated within the Thomas-Fermi approximation with two different numerical prescriptions and compared with results obtained with a common parametrization of the nonlinear Walecka model. The neutron skin thickness is a reflex of the equation of state properties. Hence, a direct correlation is found between the neutron skin thickness and the slope of the symmetry energy. We show that within the present approximations, the asymmetry parameter for low momentum transfer polarized electron scattering is not sensitive to the model differences.

Authors:
; ; ;  [1];  [2]
  1. Depto de Fisica, CFM, Universidade Federal de Santa Catarina Florianopolis, SC, CP.476, CEP 88.040, 900 (Brazil)
  2. Centro de Fisica Teorica, Dep. de Fisica, Universidade de Coimbra, P-3004-516, Coimbra (Portugal)
Publication Date:
OSTI Identifier:
20995334
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.75.055805; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; APPROXIMATIONS; BINDING ENERGY; COLLECTIVE MODEL; DENSITY; ELECTRONS; EQUATIONS OF STATE; MASS NUMBER; MOMENTUM TRANSFER; NEUTRON STARS; NEUTRONS; NUCLEAR MATTER; SURFACE ENERGY; THICKNESS; THOMAS-FERMI MODEL; WALECKA MODEL

Citation Formats

Avancini, S. S., Marinelli, J. R., Menezes, D. P., Moraes, M. M. W., and Providencia, C.. Density dependent hadronic models and the relation between neutron stars and neutron skin thickness. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.055805.
Avancini, S. S., Marinelli, J. R., Menezes, D. P., Moraes, M. M. W., & Providencia, C.. Density dependent hadronic models and the relation between neutron stars and neutron skin thickness. United States. doi:10.1103/PHYSREVC.75.055805.
Avancini, S. S., Marinelli, J. R., Menezes, D. P., Moraes, M. M. W., and Providencia, C.. Tue . "Density dependent hadronic models and the relation between neutron stars and neutron skin thickness". United States. doi:10.1103/PHYSREVC.75.055805.
@article{osti_20995334,
title = {Density dependent hadronic models and the relation between neutron stars and neutron skin thickness},
author = {Avancini, S. S. and Marinelli, J. R. and Menezes, D. P. and Moraes, M. M. W. and Providencia, C.},
abstractNote = {In the present work, we investigate the main differences in the lead neutron skin thickness, binding energy, surface energy, and density profiles obtained with two different density dependent hadron models. Our results are calculated within the Thomas-Fermi approximation with two different numerical prescriptions and compared with results obtained with a common parametrization of the nonlinear Walecka model. The neutron skin thickness is a reflex of the equation of state properties. Hence, a direct correlation is found between the neutron skin thickness and the slope of the symmetry energy. We show that within the present approximations, the asymmetry parameter for low momentum transfer polarized electron scattering is not sensitive to the model differences.},
doi = {10.1103/PHYSREVC.75.055805},
journal = {Physical Review. C, Nuclear Physics},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}