Effective masses,occupation probabilities and quasiparticle strengths in 208Pb

The dispersion relation approach is applied to the calculation of the following quantities: the radial and the energy dependence of the effective masses which characterize the mean field felt by neutrons and protons in ²⁰⁸Pb; the occupation probabilities of the shell-model orbits in the correlated ground state of ²⁰⁸Pb; the state-dependent effective masses and quasiparticle strengths; the single-particle energy shifts due to correlation corrections. Parametric expressions are constructed for most of these quantities. The results are compared with those which have previously been computed or assumed by other authors.