Neutron-skin thickness of finite nuclei in relativistic mean-field models with chiral limits

Abstract

We study several structure properties of finite nuclei using relativistic mean-field Lagrangians constructed according to the Brown-Rho scaling due to the chiral symmetry restoration at high densities. The models are consistent with current experimental constraints for the equations of state of symmetric matter at both normal and supra-normal densities and of asymmetric matter at sub-saturation densities. It is shown that these models can successfully describe the binding energies and charge radii of finite nuclei. Compared to calculations with usual relativistic mean-field models, these models give a reduced thickness of neutron skin in ^{208}Pb between 0.17 fm and 0.21 fm. The reduction of the predicted neutron skin thickness is found to be due to not only the softening of the symmetry energy but also the scaling property of $\rho$ meson required by the partial restoration of chiral symmetry.

arXiv commentAccepted version to appear in PRC (2007)

References in corpus (28)

• Neutron Star Structure and the Equation of State
• A New Parameterization for the Lagrangian Density of Relativistic Mean Field Theory
• Determination of the Equation of State of Dense Matter
• The Physics of Neutron Stars
• Isospin Asymmetry in Nuclei and Neutron Stars
• Neutron Star Structure and the Neutron Radius of 208Pb
• Neutron-Rich Nuclei in Heaven and Earth
• Determination of the stiffness of the nuclear symmetry energy from isospin diffusion
• Neutron Radii in Mean-Field Models
• Nuclear Matter and its Role in Supernovae, Neutron Stars and Compact Object Binary Mergers
• Nuclear matter symmetry energy and the neutron skin thickness of heavy nuclei
• Nucleon-nucleon cross sections in neutron-rich matter and isospin transport in heavy-ion reactions at intermediate energies
• Density Dependent Hadron Field Theory
• Microscopic determination of the nuclear incompressibility within the non-relativistic framework
• Probing the High Density Behaviour of Nuclear Symmetry Energy with High Energy Heavy-Ion Collisions
• Density dependent hadron field theory for asymmetric nuclear matter and exotic nuclei
• A microscopic estimate of the nuclear matter compressibility and symmetry energy in relativistic mean-field models
• Neutron-Proton Differential Flow as a Probe of Isospin-Dependence of Nuclear Equation of State
• Relativistic model for nuclear matter and atomic nuclei with momentum-dependent self-energies
• Neutron density distributions from antiprotonic 208Pb and 209Bi atoms
• Unmasking the nuclear matter equation of state
• The long journey from the giant-monopole resonance to the nuclear-matter incompressibility
• Dense Nuclear Matter: Landau Fermi-Liquid Theory and Chiral Lagrangian with Scaling
• Probing the Nuclear Symmetry Energy with Heavy-Ion Reactions Induced by Neutron-Rich Nuclei
• Effective DBHF Method for Asymmetric Nuclear Matter and Finite Nuclei
• Late Hadronization and Matter Formed at RHIC: Vector Manifestation, Brown-Rho Scaling and Hadronic Freedom
• Charge density of light exotic nuclei and $\rho NN$ tensor coupling
• Equation of state of isospin-asymmetric nuclear matter in relativistic mean-field models with chiral limits

Cited by in corpus (13)

• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• Isospin-dependent properties of asymmetric nuclear matter in relativistic mean-field models
• Effects of fermionic dark matter on properties of neutron stars
• Effects of a weakly interacting light U boson on the nuclear equation of state and properties of neutron stars in relativistic models
• Influence of the single-particle structure on the nuclear surface and the neutron skin
• Liquid-gas phase transition in hot asymmetric nuclear matter with density-dependent relativistic mean-field models
• Small radii of neutron stars as an indication of novel in-medium effects
• Equation of state and hybrid star properties with the weakly interacting light U-boson in relativistic models
• Symmetry energy softening in nuclear matter with non-nucleonic constituents
• Neutron star deformability with hyperonization in density-dependent relativistic mean-field models
• Effects of medium-induced $\rho -\omega$ meson mixing on the equation of state in isospin-asymmetric nuclear matter
• Chiral condensate in nuclear matter with vacuum corrections
• Rearrangements of interacting Fermi liquids