Division de Physique Théorique, Institute de Physique Nucléaire, F-91406, Orsay Cedex, France
Abstract:
Green functions techniques at finite temperature are used to calculate nuclear partition functions in the random phase approximation. The theory is shown to yield corrections to the results of functional methods neglecting exchange terms. We discuss the special case of a schematic model for which the level density and the temperature dependence of collective states can be worked out explicitly.