K. Neergård

Publications (3)3.31 Total impact

• Source

  Available from: S. Frauendorf

  Article: Comment on ``Interaction induced deformation of the momentum distribution of spin polarized nuclear matter''

  S. Frauendorf, K. Neergård
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  ABSTRACT: The paper does not take into account previous work where the effect the authors discuss is explored in detail. It is known from this previous work that the approach is incomplete.
  Physical Review C 03/2004; 69(4):49801. · 3.31 Impact Factor
• Source

  Available from: Javid Sheikh

  Article: Moments of inertia for multi-quasiparticle configurations

  S. Frauendorf, K. Neergård, J. A. Sheikh, P. M. Walker
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  ABSTRACT: Tilted-axis cranking calculations have been performed for multi-quasiparticle states in well deformed A$\approx$180 nuclei. In the limit of zero pairing, not only are the calculated moments of inertia substantially smaller than for rigid rotation, but also they are close to the experimental values. The moments of inertia are found to be insensitive to dynamic pair correlations. Comment: 8 pages 6 figures, figure 6 replaced
  02/2000;
• Article: Rotating nuclear matter

  S. Frauendorf, K. Neergård
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  ABSTRACT: Rotating nuclear matter is defined as the system of infinitely many nucleons in a rotating frame neglecting the electrostatic interaction and centrifugal single-nucleon potential. We study the ground state of this system as a function of the densities of neutrons and protons. In the limit where the angular velocity is much smaller than the Fermi energy, the structure of the single-nucleon density corresponds to anisotropic spin distributions at the surfaces of local neutron and proton Fermi spheres. The anisotropy results from the non-central terms in the effective two-nucleon interaction. Contrary to the situation in a system of non-interacting nucleons, the spin asymmetry induced by rotation is a strongly non-linear function of the Fermi momentum. In symmetric nuclear matter at normal density it equals roughly that of the non-interacting system due to mutually cancelling contributions from the spin-orbit and central parts of the effective two-nucleon interaction. The volume contributions to the moments of inertia and single-nucleon Routhian of finite nuclei are calculated, and estimates obtained of certain surface contributions to the moment of inertia.
  Zeitschrift für Physik A Hadrons and Nuclei 11/1996; 354(1):381-399.