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

Journal Article · Tue May 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.055805· OSTI ID:20995334

Avancini, S S; Marinelli, J R; Menezes, D P; Moraes, M M. W. ^[1]; Providencia, C ^[2]

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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)

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.

• OSTI ID: 20995334
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevC.75.055805; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

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