Constraining the symmetry energy content of nuclear matter from nuclear masses: a covariance analysis

Abstract

Elements of nuclear symmetry energy evaluated from different energy density functionals parametrized by fitting selective bulk properties of few representative nuclei are seen to vary widely. Those obtained from experimental data on nuclear masses across the periodic table, however, show that they are better constrained. A possible direction in reconciling this paradox may be gleaned from comparison of results obtained from use of the binding energies in the fitting protocol within a microscopic model with two sets of nuclei, one a representative standard set and another where very highly asymmetric nuclei are additionally included. A covariance analysis reveals that the additional fitting protocol reduces the uncertainties in the nuclear symmetry energy coefficient, its slope parameter as well as the neutron-skin thickness in ${}^{208}$Pb nucleus by $\sim 50\%$. The central values of these entities are also seen to be slightly reduced.

6 pages, 2 figures, Accepted in Physical Review C

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• Sensitivity of elements of the symmetry energy of nuclear matter to the properties of neutron-rich systems
• Tides in merging neutron stars: Consistency of the GW170817 event with experimental data on finite nuclei
• Bayesian reconstruction of nuclear matter parameters from the equation of state of neutron star matter
• Nearly model-independent constraints on dense matter equation of state in a Bayesian approach
• Systematic analysis of the impacts of symmetry energy parameters on neutron star properties
• Effect of isovector scalar meson on equation of state of dense matter within relativistic mean field model
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• Unveiling the correlations of tidal deformability with the nuclear symmetry energy parameters
• CREX- and PREX-II-motivated relativistic interactions and their implications for the bulk properties of nuclear matter and neutron stars
• Finite-size effects on the Phase Structure of the Walecka Model
• Electric dipole polarizability in neutron-rich Sn isotopes as a probe of nuclear isovector properties
• Observational constraint from the heaviest pulsar PSR J0952-0607 on the equation of state of dense matter in relativistic mean field model
• Relativistic approach for the determination of nuclear and neutron star properties in consideration of PREX-II results
• Constraining slope parameter of symmetry energy from nuclear structure
• Constraining nuclear matter parameters from correlation systematics:a mean-field perspective
• The nucleon effective mass and its isovector splitting
• Correlations among symmetry energy elements in Skyrme models
• Limiting symmetry energy elements from empirical evidence
• Density dependence of symmetry energy and neutron skin thickness revisited using relativistic mean field models with nonlinear couplings