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

被引：32
作者：
Avancini, S. S.
Marinelli, J. R.
Menezes, D. P.
Moraes, M. M. W.
Providencia, C.
机构：
[1] Univ Fed Santa Catarina, CFM, Dept Fis, BR-88040900 Florianopolis, SC, Brazil
[2] Univ Coimbra, Dept Fis, Ctr Fis Teor, P-3004516 Coimbra, Portugal
来源：
PHYSICAL REVIEW C | 2007年 / 75卷 / 05期
关键词：
D O I：
10.1103/PhysRevC.75.055805
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
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.
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页数：11
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