Exhaustion physics in heavy fermion systems: A T=0 NRG study

The theoretical description of heavy fermion physics, in particular the for mation and energy scale of the heavy electron liquid, is still an open issu e. One of the competing points of view is based on Nozieres' exhaustion sce nario that predicts a strongly reduced Kondo scale in concentrated systems. We study the properties of the paramagnetic phase of the periodic Anderson model within the dynamical mean-field theory at T = 0 using Wilson's numer ical renormalization group. Special emphasis is laid on the relation betwee n lattice and impurity energy scales. (C) 2000 Elsevier Science B.V. All ri ghts reserved.