Volume and surface contributions to the nuclear symmetry energy within the coherent density fluctuation model

Antonov, A. N.; Gaidarov, M. K.; Sarriguren, P.; Guerra, E. Moya de

doi:10.1103/physrevc.94.014319

Cited by 29 publications

(87 citation statements)

References 82 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our previous works [26][27][28][29][30] the CDFM allowed us to make the transition from nuclear matter to finite nuclei in the studies of the nuclear symmetry energy (NSE) for spherical [26] and deformed [27] nuclei, as well as for Mg isotopes [28] using the Brueckner energy-density functional (EDF) of asymmetric nuclear matter [31]. In our work [29] we used a similar method to investigate the temperature dependence of the NSE for isotopic chains of even-even Ni, Sn, and Pb nuclei following the local density approximation [32][33][34][35] and using instead of the Brueckner EDF, the Skyrme EDF with SkM* and SLy4 forces.…”

Section: Introductionmentioning

confidence: 99%

“…In our work [29] we used a similar method to investigate the temperature dependence of the NSE for isotopic chains of even-even Ni, Sn, and Pb nuclei following the local density approximation [32][33][34][35] and using instead of the Brueckner EDF, the Skyrme EDF with SkM* and SLy4 forces. In our work [30] the volume and surface contributions to the NSE and their ratio were calculated within the CDFM using two EDF's, namely the Brueckner [31] and Skyrme (see Ref. [36]) ones.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Symmetry energy properties of neutron-rich nuclei from the coherent density fluctuation model applied to nuclear matter calculations with Bonn potentials

et al. 2020

Self Cite

View full text Add to dashboard Cite

We derive the values of nuclear symmetry energy, its components, as well as pressure in finite nuclei at saturation density from their corresponding values in nuclear matter obtained in nonrelativistic Brueckner-Hartree-Fock calculations with the realistic Bonn B and Bonn CD potentials using the coherent density fluctuation model in the framework of a self-consistent Skyrme-Hartree-Fock plus BCS method. We focus on three isotopic chains of spherical nuclei (Ni, Sn, and Pb) and compare our results with those obtained with an effective Brueckner density-dependent potential. The role of the three-body forces on the considered quantities is also studied and discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Symmetry energy properties of neutron-rich nuclei from the coherent density fluctuation model applied to nuclear matter calculations with Bonn potentials

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The latter is commonly defined in terms of the difference between the neutron and proton root-mean-square (rms) radii and is found to be closely related to the density dependence of the NSE, with the EOS of pure neutron matter and properties of neutron stars [39][40][41][42][43][44][45][46]. It is also related to a number of observables in finite nuclei, including the NSE (see, e.g., [4,8,9,[47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65]), although its precise measurement is difficult. As examples, in Ref.…”

Section: Introductionmentioning

confidence: 99%

Temperature dependence of the symmetry energy and neutron skins in Ni, Sn, and Pb isotopic chains

et al. 2017

Self Cite

View full text Add to dashboard Cite

The temperature dependence of the symmetry energy for isotopic chains of even-even Ni, Sn, and Pb nuclei is investigated in the framework of the local density approximation (LDA). The Skyrme energy density functional with two Skyrme-class effective interactions, SkM* and SLy4, is used in the calculations. The temperaturedependent proton and neutron densities are calculated through the HFBTHO code that solves the nuclear SkyrmeHartree-Fock-Bogoliubov problem by using the cylindrical transformed deformed harmonic-oscillator basis. In addition, two other density distributions of 208 Pb, namely the Fermi-type density determined within the extended Thomas-Fermi (TF) method and symmetrized-Fermi local density obtained within the rigorous density functional approach, are used. The kinetic energy densities are calculated either by the HFBTHO code or, for a comparison, by the extended TF method up to second order in temperature (with T 2 term). Alternative ways to calculate the symmetry energy coefficient within the LDA are proposed. The results for the thermal evolution of the symmetry energy coefficient in the interval T = 0-4 MeV show that its values decrease with temperature. The temperature dependence of the neutron and proton root-mean-square radii and corresponding neutron skin thickness is also investigated, showing that the effect of temperature leads mainly to a substantial increase of the neutron radii and skins, especially in the more neutron-rich nuclei, a feature that may have consequences on astrophysical processes and neutron stars.

show abstract

“…In our previous works [12,31,43,44], as well as in the present paper, the transition from the properties of nuclear matter to those of finite nuclei has been made using the CDFM. The model is a natural extension of the Fermi-gas one.…”

Section: Nuclear Eos Parameters In Nuclear Matter and Finite Nucleimentioning

confidence: 96%

Proton and neutron skins and symmetry energy of mirror nuclei

et al. 2020

Self Cite

View full text Add to dashboard Cite

The neutron skin of nuclei is an important fundamental property, but its accurate measurement faces many challenges. Inspired by charge symmetry of nuclear forces, the neutron skin of a neutron-rich nucleus is related to the difference between the charge radii of the corresponding mirror nuclei. We investigate this relation within the framework of the Hartree-Fock-Bogoliubov method with Skyrme interactions. Predictions for proton skins are also made for several mirror pairs in the middle mass range. For the first time the correlation between the thickness of the neutron skin and the characteristics related with the density dependence of the nuclear symmetry energy is investigated simultaneously for nuclei and their corresponding mirror partners. As an example, the Ni isotopic chain with mass number A = 48 − 60 is considered. These quantities are calculated within the coherent density fluctuation model using Brueckner and Skyrme energy-density functionals for isospin asymmetric nuclear matter with two Skyrme-type effective interactions, SkM* and SLy4. Results are also presented for the symmetry energy as a function of A for a family of mirror pairs from selected chains of nuclei with Z = 20, N = 14, and N = 50. The evolution curves show a similar behavior crossing at the N = Z nucleus in each chain and a smooth growing deviation when N = Z starts. Comparison of our results for the radii and skins with those from the calculations based on high-precision chiral forces is made.

show abstract

Volume and surface contributions to the nuclear symmetry energy within the coherent density fluctuation model

Cited by 29 publications

References 82 publications

Symmetry energy properties of neutron-rich nuclei from the coherent density fluctuation model applied to nuclear matter calculations with Bonn potentials

Symmetry energy properties of neutron-rich nuclei from the coherent density fluctuation model applied to nuclear matter calculations with Bonn potentials

Temperature dependence of the symmetry energy and neutron skins in Ni, Sn, and Pb isotopic chains

Proton and neutron skins and symmetry energy of mirror nuclei

Contact Info

Product

Resources

About