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  • 2000-2004  (1)
  • 1995-1999  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Unrestricted symmetry-projected Hartree-Fock-Bogoliubov calculations for SD-shell nuclei (1998)
    Springer
    The European physical journal 2 (1998), S. 371-377 
    Details
    ISSN: 1434-601X
    Keywords: PACS:21.10.-k Properties of nuclei, nuclear energy levels – 21.60.Jz Hartree-Fock and random-phase approximation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstact: The solution of the Hartree–Fock–Bogoliubov problem with restoration of the broken symmetries before the variation has been generalized for the use of totally unrestricted quasi–particle determinants. With this method doubly–even, doubly–odd and odd nuclei can be treated on the same footing. Comparison with the results of complete shell–model diagonalizations shows that already one–determinant representations yield a very good approximation to the exact solutions even in the middle of the 1s0d shell. The problem is especially suited for numerical implementation on parallel computers. First tests show a linear dependence of the inverse CPU time with the number of processors used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050133
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  • 2
    Electronic Resource
    Electronic Resource
    Unrestricted symmetry-projected Hartree-Fock-Bogoliubov calculations for some PF-shell nuclei (2000)
    Springer
    The European physical journal 7 (2000), S. 201-208 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Total binding energies and yrast energy spectra of three selected 1p0f–nuclei have been calculated using an unrestricted Hartree–Fock–Bogoliubov approach with symmetry–projection before the variation. The full 1p0f–shell has been used as single–particle basis and the semi–empirical FPD6 interaction as effective Hamiltonian. The results are compared to those of truncated shell–model calculations performed with the OXBASH code. In the middle of the 1p0f–shell the variational method yields energy gains up to 4.5 MeV and thus proves to be far superior than the conventional truncation methods at least if in the latter only up to about 13000 configurations for each spin–isospin combination are admitted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050382
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    Paper (German National Licenses)
    Fulltext
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