107 research outputs found
Nuclear ground-state properties from mean-field calculations
The volume and surface effects in the nuclear local energy density and the
volume and surface components of the pairing interaction are discussed in the
context of the mean-field, Hartree-Fock-Bogoliubov description of atomic
nuclei. Predictions of properties of exotic nuclei close to the particle drip
lines are presented.Comment: Presented at the 3rd International Conference on Exotic Nuclei and
Atomic Masses, Hameenlinna, Finland, July 2-7, 2001, to be published in
European Physical Journa
Skyrme-HFB deformed nuclear mass table
The Skyrme-Hartree-Fock-Bogoliubov code HFBTHO using the axial (2D)
Transformed Harmonic Oscillator basis is tested against the HFODD (3D Cartesian
HO basis) and HFBRAD (radial coordinate) codes. Results of large-scale
ground-state calculations are presented for the SLy4 and SkP interactions.Comment: 6 LaTeX pages, 3 figures, uses aipproc, presented at International
Conference NUCLEAR PHYSICS, LARGE and SMALL, Hotel Hacienda Cocoyoc, April
19-22, 2004, to be published in AIP Proceedings, see also
http://www.fuw.edu.pl/~dobaczew/thodri/thodri.htm
Particle-Number Projection and the Density Functional Theory
In the framework of the Density Functional Theory for superconductors, we
study the restoration of the particle number symmetry by means of the
projection technique. Conceptual problems are outlined and numerical
difficulties are discussed. Both are related to the fact that neither the
many-body Hamiltonian nor the wave function of the system appear explicitly in
the Density Functional Theory. Similar obstacles are encountered in
self-consistent theories utilizing density-dependent effective interactions.Comment: 18 RevTex pages, 12 figures, submitted to Physical Review
Structure of Exotic Nuclei
The progress in the modeling of exotic nuclei with an extreme
neutron-to-proton ratio is discussed. Two topics are emphasized: (i) the quest
for the universal microscopic nuclear energy density functional and (ii) the
progress in the continuum shell model.Comment: 10 pages, 2 figures, presented by W. Nazarewicz at the International
Symposium on "A New Era of Nuclear Structure Physics", Kurokawa Village
(Niigata Pref.), Japan, Nov. 19-22, 200
Variation after Particle-Number Projection for the HFB Method with the Skyrme Energy Density Functional
Variation after particle-number restoration is incorporated for the first
time into the Hartree-Fock-Bogoliubov framework employing the Skyrme energy
density functional with zero-range pairing. The resulting projected HFB
equations can be expressed in terms of the local gauge-angle-dependent
densities. Results of projected calculations are compared with those obtained
within the Lipkin-Nogami method in the standard version and with the
Lipkin-Nogami method followed by exact particle-number projection.Comment: 11 pages, 6 figure
Natural Units For Nuclear Energy Density Functional Theory
Naive dimensional analysis based on chiral effective theory, when adapted to
nuclear energy density functionals, prescribes natural units and a hierarchy of
contributions that could be used to constrain fits of generalized functionals.
By applying these units, a large sample of Skyrme parametrizations is examined
for naturalness, which is signaled by dimensionless coupling constants of order
one. The bulk of the parameters are found to be natural, with an underlying
scale consistent with other determinations. Significant deviations from unity
are associated with deficiencies in the corresponding terms of particular
functionals or with an incomplete optimization procedure.Comment: 5 pages, 2 figures, accepted for publication in Phys. Rev.
Two-Body Density Matrix for Closed s-d Shell Nuclei
The two-body density matrix for and within the
Low-order approximation of the Jastrow correlation method is considered. Closed
analytical expressions for the two-body density matrix, the center of mass and
relative local densities and momentum distributions are presented. The effects
of the short-range correlations on the two-body nuclear characteristics are
investigated.Comment: 13 pages(LaTeX), 4 figures (ps
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