scholarly journals Optimizing the relativistic energy density functional with nuclear ground state and collective excitation properties

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
E. Yüksel ◽  
T. Marketin ◽  
N. Paar
Keyword(s):  
Energy Density ◽  
Ground State ◽  
Density Functional ◽  
Collective Excitation ◽  
Relativistic Energy ◽  
Energy Density Functional ◽  
Nuclear Ground State

scholarly journals Nuclear Equation of State in the Relativistic Point-Coupling Model Constrained by Excitations in Finite Nuclei

Universe ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 71
Author(s):  
Esra Yüksel ◽  
Tomohiro Oishi ◽  
Nils Paar
Keyword(s):  
Experimental Data ◽  
Equation Of State ◽  
Energy Density ◽  
Symmetry Energy ◽  
Ground State ◽  
Density Functional ◽  
Dipole Polarizability ◽  
Energy Density Functional ◽  
Nuclear Equation Of State ◽  
Ground State Properties

Nuclear equation of state is often described in the framework of energy density functional. However, the isovector channel in most functionals has been poorly constrained, mainly due to rather limited available experimental data to probe it. Only recently, the relativistic nuclear energy density functional with an effective point-coupling interaction was constrained by supplementing the ground-state properties of nuclei with the experimental data on dipole polarizability and isoscalar monopole resonance energy in 208Pb, resulting in DD-PCX parameterization. In this work, we pursue a complementary approach by introducing a family of 8 relativistic point-coupling functionals that reproduce the same nuclear ground-state properties, including binding energies and charge radii, but in addition have a constrained value of symmetry energy at saturation density in the range J = 29, 30, …, 36 MeV. In the next step, this family of functionals is employed in studies of excitation properties such as dipole polarizability and magnetic dipole transitions, and the respective experimental data are used to validate the optimal choice of functional as well as to assess reliable values of the symmetry energy and slope of the symmetry energy at saturation.

scholarly journals Nuclear magnetic transitions in the relativistic energy density functional approach

2021 ◽  
Vol 252 ◽  
pp. 02002
Author(s):  
Nils Paar ◽  
Goran Kružić ◽  
Tomohiro Oishi
Keyword(s):  
Energy Density ◽  
Density Functional ◽  
Open Shell ◽  
Experimental Investigations ◽  
Transition Strength ◽  
Relativistic Energy ◽  
Energy Density Functional ◽  
Spin Orbital ◽  
Novel Theory ◽  
Pairing Correlations

Recently a novel theory framework has been established for description of magnetic dipole (M1) transitions in finite nuclei, based on relativistic nuclear energy density functional with point coupling interactions. The properties of M1 transitions have been studied, including the sum rules, spin, orbital, isoscalar and isovector M1 transition strengths in magic and open shell nuclei. It is shown that pairing correlations and spinorbit interaction plays an important role in the description of M1 transition strength distributions. The analysis of the evolution of M1 transition properties in the isotope chain 100-140 Sn shows the interplay between single and double-peak structures, determined by the evolution of single-particle states, their occupations governed by the pairing correlations, and two-quasiparticle transitions involved. Comparison of the calculated B(M1) transition strength with recent data from inelastic proton scattering on 112-124 Sn, shows that quenching of the g factors geff/gfree =0.80-0.93 is required to reproduce the experimental data. Further experimental investigations are needed to determine accurately the quenching factor.

scholarly journals Ground state of nuclei in the Barium region within the Highly Truncated Diagonalization Approach

2017 ◽  
Vol 126 (1B) ◽  
pp. 101
Author(s):  
Tran Viet Nhan Hao ◽  
Nguyen Hoang Tung ◽  
Nizigama Aloys ◽  
Nguyen Nhu Le
Keyword(s):  
Energy Density ◽  
Ground State ◽  
Density Functional ◽  
Particle Number ◽  
Residual Interaction ◽  
Microscopic Approach ◽  
Energy Density Functional ◽  
Parity Symmetry

The ground state of some Barium isotopes has been investigated in the framework of the parity-symmetry projection of the Highly Truncated Diagonalization Approach (HTDA), which is suited to treat the correlations in an explicitly particle-number conserving microscopic approach. A Skyrme energy -density functional using the SkM∗ interactions has been considered to treat the particle-hole channel, whereas a density-independent δ force has been adopted for the residual interaction. The obtained results are compared with the previous calculations using the Woods-Saxon potentials

scholarly journals Ground state of nuclei in the Barium region within the Highly Truncated Diagonalization Approach

2017 ◽  
Vol 126 (1B) ◽  
Author(s):  
Tran Viet Nhan Hao ◽  
Nguyen Hoang Tung ◽  
Nizigama Aloys ◽  
Nguyen Nhu Le
Keyword(s):  
Energy Density ◽  
Ground State ◽  
Density Functional ◽  
Particle Number ◽  
Residual Interaction ◽  
Microscopic Approach ◽  
Energy Density Functional ◽  
Parity Symmetry

The ground state of some Barium isotopes has been investigated in the framework of the parity-symmetry projection of the Highly Truncated Diagonalization Approach (HTDA), which is suited to treat the correlations in an explicitly particle-number conserving microscopic approach. A Skyrme energy -density functional using the SkM∗ interactions has been considered to treat the particle-hole channel, whereas a density-independent δ force has been adopted for the residual interaction. The obtained results are compared with the previous calculations using the Woods-Saxon potentials

scholarly journals Octupole correlations in light actinides from the interacting boson model based on the Gogny energy density functional

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
K. Nomura ◽  
R. Rodríguez-Guzmán ◽  
Y. M. Humadi ◽  
L. M. Robledo ◽  
J. E. García-Ramos
Keyword(s):  
Energy Density ◽  
Density Functional ◽  
Interacting Boson Model ◽  
Energy Density Functional ◽  
Model Based ◽  
Boson Model
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