scholarly journals Propagation of statistical uncertainties in covariant density functional theory: Ground state observables and single-particle properties

2019 ◽  
Vol 99 (1) ◽  
Author(s):  
S. E. Agbemava ◽  
A. V. Afanasjev ◽  
A. Taninah
Keyword(s):  
Density Functional Theory ◽  
Single Particle ◽  
Ground State ◽  
Density Functional ◽  
Functional Theory ◽  
Particle Properties ◽  
Covariant Density Functional Theory ◽  
Covariant Density

scholarly journals Ground state properties and shape evolution in Pt isotopes within the covariant density functional theory

2019 ◽  
Vol 28 (10) ◽  
pp. 1950078
Author(s):  
Y. El Bassem ◽  
M. Oulne
Keyword(s):  
Density Functional Theory ◽  
Ground State ◽  
Density Functional ◽  
Meson Exchange ◽  
Isotopic Chain ◽  
Functional Theory ◽  
Density Dependent ◽  
Covariant Density Functional Theory ◽  
Ground State Properties ◽  
Covariant Density

In this work, the ground state properties of the platinum isotopic chain, [Formula: see text]Pt are studied within the covariant density functional theory. The calculations are carried out for a large number of even–even Pt isotopes by using the density-dependent point-coupling and the density-dependent meson-exchange effective interactions. All ground state properties such as the binding energy, separation energy, two-neutron shell gap, root mean square (rms)-radii for neutrons and protons and quadrupole deformation are discussed and compared with available experimental data, and with the predictions of some nuclear models such as the Relativistic Mean Field (RMF) model with NL3 functional and the Hartree–Fock–Bogoliubov (HFB) method with SLy4 Skyrme force. The shape phase transition for Pt isotopic chain is also studied. Its corresponding total energy curves as well as the potential energy surfaces confirm the transition from prolate to oblate shapes at [Formula: see text]Pt contrary to some studies predictions and in agreement with others. Overall, a good agreement is found between the calculated and experimental results wherever available.

Cranking covariant density functional theory with a shell-model-like approach for the superdeformed band of 42Ca

2021 ◽  
pp. 2150055
Author(s):  
Lang Liu
Keyword(s):  
Density Functional Theory ◽  
Shell Model ◽  
Rotational Band ◽  
Single Particle ◽  
Density Functional ◽  
Rotational Frequency ◽  
Superdeformed Band ◽  
Functional Theory ◽  
Covariant Density Functional Theory ◽  
Covariant Density

The superdeformed rotational band in [Formula: see text]Ca is studied with the cranking covariant density functional theory complemented by a shell-model-like approach for treating the pairing correlations. The microscopic and self-consistent description of the superdeformed rotational band is obtained. The calculated energy surfaces show local minimums at [Formula: see text] from rotational frequency [Formula: see text] [Formula: see text] to [Formula: see text][Formula: see text]MeV. The shape coexistence of spherical, normal deformation and superdeformation is found at [Formula: see text][Formula: see text]MeV. The single-particle levels and configurations are analyzed in details with the deformation. The configuration of the superdeformed band is figured out as [Formula: see text]. The single-particle Routhians indicate that the neutrons configuration plays a key role in the formation of the superdeformed band, and the change of the protons configuration at [Formula: see text][Formula: see text]MeV terminates the superdeformed band. The importance of pairing correlation to the superdeformed band is also studied in terms of the moments of inertia and the angular momentum.

Mass and lifetime of unstable nuclei in covariant density functional theory

2013 ◽  
Vol T154 ◽  
pp. 014010 ◽  
Author(s):  
J Meng ◽  
Y Chen ◽  
H Z Liang ◽  
Y F Niu ◽  
Z M Niu ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Functional Theory ◽  
Unstable Nuclei ◽  
Covariant Density Functional Theory ◽  
Covariant Density
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