B. K. Agrawal

Determination of the parameters of a Skyrme type effective interaction using the simulated annealing approach

We implement for the first time the simulated annealing method to the problem of searching for the global minimum in the hypersurface of the {chi}{sup 2} function, which depends on the values of the parameters of a Skyrme-type effective nucleon-nucleon interaction. We undertake a realistic case of fitting the values of the Skyrme parameters to an extensive set of experimental data on the ground-state properties of many nuclei, ranging from normal to exotic ones. The set of experimental data used in our fitting procedure includes the radii for the valence 1d{sub 5/2} and 1f{sub 7/2} neutron orbits in the {sup 17}O and {sup 41}Ca nuclei, respectively, and the breathing-mode energies for several nuclei, in addition to the typically used data on binding energy, charge radii, and spin-orbit splitting. We also include in the fit the critical density {rho}{sub cr} and further constrain the values of the Skyrme parameters by requiring that (i) the quantity P=3{rho}(dS/d{rho}), directly related to the slope of the symmetry energy S, must be positive for densities up to 3{rho}{sub 0}; (ii) the enhancement factor {kappa}, associated with the isovector giant dipole resonance, should lie in the range of 0.1-0.5; and (iii) the Landau parameter G{sub 0}{supmorexa0» } is positive at {rho}={rho}{sub 0}. We provide simple but consistent schemes to account for the center-of-mass corrections to the binding energy and charge radii.«xa0less

Nuclear matter incompressibility coefficient in relativistic and nonrelativistic microscopic models

We systematically analyze the recent claim that nonrelativistic and relativistic mean field (RMF) based random phase approximation (RPA) calculations for the centroid energy

Giant Quadrupole Resonances in 208Pb, the nuclear symmetry energy and the neutron skin thickness

{E}_{0}

Electric dipole polarizability in 208Pb: Insights from the droplet model

of the isoscalar giant monopole resonance yield for the nuclear matter incompressibility coefficient

Effects of self-consistency violation in Hartree-Fock RPA calculations for nuclear giant resonances revisited

{K}_{mathrm{nm}}

Determining the density content of symmetry energy and neutron skin: an empirical approach.

values which differ by about

Optimization of relativistic mean field model for finite nuclei to neutron star matter

20%.

Existence of hyperons in the pulsar PSRJ1614-2230

For an appropriate comparison with the RMF based RPA calculations, we obtain the parameters of the Skyrme force used in the nonrelativistic model by adopting the same procedure as employed in the determination of the NL3 parameter set of the effective Lagrangian used in the RMF model. Our investigation suggests that the discrepancy between the values of

Consequences of self-consistency violations in Hartree-Fock random-phase approximation calculations of the nuclear breathing mode energy

{K}_{mathrm{nm}}

Information content of the weak-charge form factor

predicted by the relativistic and nonrelativistic models is significantly less than