Approximate particle number projection for finite range density dependent forces

Details Approximate particle number projection for finite range density dependent forces Approximate particle number projection for finite range density dependent forces

1995-05-30

arxiv.org/abs/nucl-th/9505042v1

Phys.Rev.C53:172-175,1996

Physics

Nuclear Physics

Nuclear Theory

5 pages, RevTeX 3.0, 3 postscript figures included using uufiles. Submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevC.53.172

The Lipkin-Nogami method is generalized to deal with finite range density dependent forces. New expressions are derived and realistic calculations with the Gogny force are performed for the nuclei $^{164}$Er and $^{168}$Er. The sharp phase transition predicted by the mean field approximation is washed out by the Lipkin-Nogami approach; a much better agreement with the experimental data is reached with the new approach than with the Hartree-Fock_Bogoliubov one, specially at high spins.

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