We study the temperature dependence of the specific heat in the periodic An
derson model as function of the on-site Coulomb interaction, hybridization,
and position of the f electrons energy level. At strong coupling (U = infi
nity) we use slave bosons, whereas at weak coupling we use a simple Hartree
-Fock decomposition. We find that both in the strong and weak coupling limi
ts the specific heat of the system presents a multiple peak structure in a
mean field treatment. We believe these features to be related to band-shape
effects. The temperature evolution of the low-temperature peak position on
the model parameters for the non-half-filled nonsymmetric case is discusse
d.