RELATIVISTIC NUCLEAR ENERGY DENSITY FUNCTIONALS

A class of relativistic nuclear energy density functionals is explored, in which only nucleon degrees of freedom are explicitly used in the construction of effective interaction terms. Short-distance correlations, as well as intermediate and long-range dynamics, are encoded in the nucleon-density dependence of the strength functionals of an effective interaction Lagrangian. The resulting phenomenological effective interaction, adjusted to experimental binding energies of a large set of axially deformed nuclei, together with a new separable pairing interaction adjusted to reproduce the pairing gap in nuclear matter calculated with the Gogny force, is applied in triaxial relativistic Hartree-Bogoliubov calculations of sequences of heavy nuclei: Th , U , Pu , Cm , Cf , Fm , and No .

Download Full-text

BEYOND THE RELATIVISTIC MEAN-FIELD APPROXIMATION: CONFIGURATION MIXING CALCULATIONS

International Journal of Modern Physics E ◽

10.1142/s0218301311017855 ◽

2011 ◽

Vol 20 (02) ◽

pp. 459-464 ◽

Cited By ~ 1

Author(s):

T. NIKŠIĆ ◽

D. VRETENAR ◽

P. RING

Keyword(s):

Degrees Of Freedom ◽

Effective Interaction ◽

Mean Field ◽

Field Approximation ◽

Binding Energies ◽

Mean Field Approximation ◽

Large Set ◽

Relativistic Mean Field ◽

Interaction Terms ◽

Range Dynamics

A class of relativistic nuclear energy density functionals is explored, in which only nucleon degrees of freedom are explicitly used in the construction of effective interaction terms. Short-distance correlations, as well as intermediate and long-range dynamics, are encoded in the nucleon-density dependence of the strength functionals of an effective interaction Lagrangian. The resulting phenomenological effective interaction, adjusted to experimental binding energies of a large set of axially deformed nuclei, together with a new separable pairing interaction adjusted to reproduce the pairing gap in nuclear matter calculated with the Gogny force, is applied in the description of the quadrupole dynamics in Pt isotopes.

Download Full-text

Relativistic nuclear energy density functionals: Adjusting parameters to binding energies

Physical Review C ◽

10.1103/physrevc.78.034318 ◽

2008 ◽

Vol 78 (3) ◽

Cited By ~ 242

Author(s):

T. Nikšić ◽

D. Vretenar ◽

P. Ring

Keyword(s):

Energy Density ◽

Nuclear Energy ◽

Binding Energies ◽

Density Functionals

Download Full-text

Constraints on the inner edge of neutron star crusts from relativistic nuclear energy density functionals

HNPS Proceedings ◽

10.12681/hnps.2545 ◽

2019 ◽

Vol 18 ◽

pp. 107

Author(s):

Ch. C. Moustakidis ◽

T. Niksic ◽

G. A. Lalazissis ◽

D. Vretenar ◽

P. Ring

Keyword(s):

Neutron Star ◽

Energy Density ◽

Neutron Stars ◽

Nuclear Energy ◽

Liquid Core ◽

Transition Density ◽

Binding Energies ◽

Density Functionals ◽

The Core ◽

Finite Nuclei

The transition density nt and pressure Pt at the inner edge between the liquid core and the solid crust of a neutron star are analyzed using the thermodynami- cal method and the framework of relativistic nuclear energy density functionals. Starting from a functional that has been carefully adjusted to experimental binding energies of finite nuclei, and varying the density dependence of the cor- responding symmetry energy within the limits determined by isovector prop- erties of finite nuclei, we estimate the constraints on the core-crust transition density and pressure of neutron stars: 0.086 fm−3 ≤ nt < 0.090 fm−3 and 0.3 MeV fm−3 < Pt ≤ 0.76 MeV fm−3 [1].

Download Full-text