title: Exact level densities for the harmonic oscillator.
abstract: The number of levels of a many-fermion system confined by a harmonic-oscillator potential is computed as a function of excitation energy. Because of its exact nature, the formalism accounts for effects of shell structure on the level density. The method is easily extended to a variety of situations as is illustrated with the inclusion of isospin and deformation effects as well as a calculation of the number of spurious states.
authors.affiliation: Grand Accélérateur National d'Ions Lourds, B.P. 55027, F-14076 Caen Cedex 5, France.
authors.forename: P
authors.initials: P
authors.lastname: Van Isacker