  Several studies have so far investigated transport properties of strongly
correlated systems. Interesting features of these materials are the lack of
resistivity saturation well beyond the Mott-Ioffe-Regel limit and the scaling
of the resistivity with the hole density in underdoped cuprates. Due to the
strongly correlated nature of these materials, mainly numerical techniques have
been employed. A key role in this regards is thought to be played by the
continuous transfer of spectral weight from coherent to incoherent states. In
this paper we employ a simple analytical expression for the electronic Green's
function to evaluate both quasi-particle and transport properties in correlated
systems. Our analytical approach permits to enlighten the specific role of the
spectral transfer due to the correlation on different features. In particular
we investigate the dependence of both quasi-particle and transport scattering
rate on the correlation degree and the criterion for resistivity saturation.
systems.
