The recent high-resolution measurement of the electric dipole ($E1$) polarizability ${\ensuremath{\alpha}}_{\mathrm{D}}$ in ${}^{208}$Pb [A. Tamii et al., Phys. Rev. Lett. 107, 062502 (2011)] provides a unique constraint on neutron-skin thickness this nucleus. ${r}_{\mathrm{skin}}$ is quantity critical importance for our understanding variety nuclear and astrophysical phenomena. To assess model dependence correlation between ${r}_{\mathrm{skin}}$, we carry out systematic calculations...

Constraints set on key parameters of the nuclear matter equation state (EoS) by values tidal deformability, inferred from GW170817, are examined using a diverse relativistic and nonrelativistic mean-field models. These models consistent with bulk properties finite nuclei as well observed lower bound maximum mass neutron star $\ensuremath{\approx}2{M}_{\ensuremath{\bigodot}}$. The deformability shows strong correlation specific linear combinations isoscalar isovector associated EoS. Such...

The authors use recent available experimental data on the electric dipole polarizability of ${}^{68}$Ni, ${}^{120}$Sn, and ${}^{208}$Pb to constrain physically important quantities including symmetry energy, its slope, neutron skin thickness. strong correlation between polarizabilities two nuclei is instrumental in predicting values other nuclei. results are interest for future observational, experimental, theoretical work these interconnected nuclear quantities.

We implement for the first time simulated annealing method to problem of searching global minimum in hypersurface ${\ensuremath{\chi}}^{2}$ function, which depends on values parameters a Skyrme-type effective nucleon-nucleon interaction. undertake realistic case fitting Skyrme an extensive set experimental data ground-state properties many nuclei, ranging from normal exotic ones. The used our procedure includes radii valence $1{d}_{5/2}$ and $1{f}_{7/2}$ neutron orbits $^{17}\mathrm{O}$...

We study the electric dipole polarizability ${\ensuremath{\alpha}}_{D}$ in ${}^{208}$Pb based on predictions of a large and representative set relativistic nonrelativistic nuclear mean-field models. adopt droplet model as guide to better understand correlations between other isovector observables. Insights from suggest that product symmetry energy at saturation density $J$ is much correlated with neutron skin thickness $\ensuremath{\Delta}{r}_{np}$ than alone. Correlations...

Recent improvements in the experimental determination of properties Isovector Giant Quadrupole Resonance (IVGQR), as demonstrated A=208 mass region, may be instrumental for characterizing isovector channel effective nuclear interaction. We analyze IVGQR 208Pb, using both macroscopic and microscopic approaches. The method is based on families non-relativistic covariant Energy Density Functionals (EDF), characterized by a systematic variation isoscalar corresponding matter equations state....

Abstract The general behavior of the nuclear equation state (EOS), relevant for description neutron stars (NSs), is studied within a Bayesian approach applied to set models based on density-dependent relativistic mean-field matter. EOS subjected minimal number constraints saturation properties and low-density pure matter obtained from precise next-to-next-to-next-to-leading order (N 3 LO) calculation in chiral effective field theory ( χ EFT). posterior distributions model parameters under...

We systematically analyze the recent claim that nonrelativistic and relativistic mean field (RMF) based random phase approximation (RPA) calculations for centroid energy ${E}_{0}$ of isoscalar giant monopole resonance yield nuclear matter incompressibility coefficient ${K}_{\mathrm{nm}}$ values which differ by about $20%.$ For an appropriate comparison with RMF RPA calculations, we obtain parameters Skyrme force used in model adopting same procedure as employed determination NL3 parameter...

The density dependence of nuclear symmetry energy remains poorly constrained. Starting from precise empirical values the volume and surface coefficients saturation density, we show how in ambit microscopic calculations with different functionals, value slope parameter $L$ along that for neutron skin can be put tighter bounds. is found to $L=64\ifmmode\pm\else\textpm\fi{}5\text{ }\text{ }\mathrm{MeV}$. For $^{208}\mathrm{Pb}$, thickness comes out $0.188\ifmmode\pm\else\textpm\fi{}0.014\text{...

We examine the correlations of neutron star radii with nuclear matter incompressibility, symmetry energy, and their slopes, which are key parameters equation state (EoS) asymmetric matter. The EoS evaluated using a representative set 24 Skyrme-type effective forces 18 relativistic mean field models, two microscopic calculations, all describing $2{M}_{\ensuremath{\bigodot}}$ stars. Unified EoSs for inner-crust--core region have been built phenomenological both nonrelativistic. Our...

We carry out the study for finite nuclei, infinite nuclear matter and neutron star properties with newly developed relativistic force named as Institute Of Physics Bhubaneswar-I(IOPB-I). Using this force, we calculate binding energies, charge radii skin thickness some selected nuclei. From ground state of superheavy element i.e. Z=120, it is noticed that considerable shell gaps appear at numbers N=172, 184 198, showing magicity these numbers. The low density behavior equation pure compatible...

Relations between the nuclear symmetry energy coefficient and its density derivatives are derived. The relations hold for a class of interactions with quadratic momentum dependence power-law dependence. structural connection different elements as obtained seems to be followed by almost all reasonable functionals, both relativistic nonrelativistic, suggesting universality in correlation structure. This, coupled known values some well-accepted constants related matter, helps constraining...

The impacts of various symmetry energy parameters on the properties neutron stars (NSs) have been recently investigated, and outcomes are at variance, as summarized in Table III Phys. Rev. D 106, 063005 (2022). We systematically analyzed correlations slope curvature saturation density (${\ensuremath{\rho}}_{0}=0.16\phantom{\rule{0.16em}{0ex}}{\text{fm}}^{\ensuremath{-}3}$) with tidal deformability stellar radius nonspinning mass range...

The equations of state (EOSs) governing neutron star (NS) matter obtained for both nonrelativistic and relativistic mean-field models are systematically confronted with a diverse set terrestrial data astrophysical observations within the Bayesian framework. data, spanning from bulk properties finite nuclei to heavy-ion collisions, constrain symmetric nuclear EOS symmetry energy up twice saturation density (${\ensuremath{\rho}}_{0}=0.16\text{ }\text{ }{\mathrm{fm}}^{\ensuremath{-}3}$)....

We study the properties of nonrotating and rotating neutron stars for a new set equations state (EOSs) with different high-density behavior obtained using extended field theoretical model. The these EOSs are varied by varying \ensuremath{\omega}-meson self-coupling hyperon-meson couplings in such way that quality fit to bulk nuclear observables, matter incompressibility coefficient, hyperon-nucleon potential depths remain practically unaffected. find largest value maximum mass star is...

We provide accurate assessments of the consequences violations self-consistency in Hartree-Fock-(HF) based random-phase approximation (RPA) calculations centroid energy ${E}_{\mathrm{cen}}$ isoscalar and isovector giant resonances multipolarities $L=0\ensuremath{-}3$ a wide range nuclei. This is done by carrying out highly HF-RPA neglecting particle-hole (p-h) spin-orbit or Coulomb interaction RPA comparing with fully self-consistent results. find that shifts value because violation...

The density dependence of the symmetry energy, instrumental in understanding behaviour asymmetric nuclear matter, is investigated within extended relativistic mean field (ERMF) model which includes contributions from self and mixed interaction terms for scalar-isoscalar ($\sigma$), vector-isoscalar ($\omega$) vector-isovector ($\rho$) mesons upto quartic order. Each 26 different parameterizations ERMF employed are compatible with bulk properties finite nuclei. energy several parameter sets...

The nuclear matter parameters (NMPs), those underlie in the construction of equation state (EoS) neutron star matter, are not directly accessible. Bayesian approach is applied to reconstruct posterior distributions NMPs from EoS matter. constraints on lower-order as imposed by finite nuclei observables incorporated through appropriately chosen prior distributions. calculations performed with two sets pseudo data whose true models known. median values second or higher order show sizeable...

We investigate the implications of parity-violating electron scattering experiment on neutron skin thickness $^{48}$Ca (CREX) and $^{208}$Pb (PREX-II) data bulk properties finite nuclei, nuclear matter, stars. The from CREX PREX-II is employed to constrain parameters relativistic mean field models which includes different non-linear, self cross-couplings among isoscalar-scalar $\sigma$, isoscalar-vector $\omega$, isovector-scalar $\delta$ isovector-vector $\rho$ meson fields up quartic...

Background: The equations of state (EoSs) which determine the properties neutron stars (NSs) are often characterized by isoscalar and isovector nuclear matter parameters (NMPs). Recent attempts to relate radius tidal deformability a NS individual NMPs have been inconclusive. These display strong correlations with pressure depends on several NMPs. It may be necessary map NMPs.Purpose: To identify important required describe star for astrophysically relevant range their gravitational masses...

We parameterize the recently proposed generalized Skyrme effective force (GSEF) containing extended density dependence. The parameters of GSEF are determined by fit to several properties normal and isospin-rich nuclei. also include in our a realistic equation state for pure neutron matter up high densities so that resulting can be suitably used model star with "canonical" mass ($\sim 1.4 M_\odot$). For appropriate comparison we generate parameter set standard (SSEF) using exactly same data...

Parity-violating electron scattering provides a model-independent determination of the nuclear weak-charge form factor that has widespread implications across such diverse areas as fundamental symmetries, structure, heavy-ion collisions, and neutron-star structure. We assess impact precise measurements ${}^{48}$Ca ${}^{208}$Pb on variety observables, neutron skin electric-dipole polarizability. use Density Functional Theory with several accurately calibrated non-relativistic relativistic...