  The density and temperature dependence of nucleonic single particle spectral
function in symmetric nuclear matter at finite temperatures and densities
beyond normal nuclear matter density is investigated in a model emphasizing
short-range correlations and phase space aspects. A simple but self-consistent
approach based on quantum transport theory is used. In particular we consider
the density and temperature regime occuring e.g. during the core collapse in a
supernova explosion and the subsequent formation of a neutron star. Mean-field
effects are incorporated by a Skyrme type potential.
