Low Energy Scales and Temperature Dependent Photoemission of Heavy Fermions

We solve the S=1/2 Kondo lattice model within the dynamical mean field theory. Detailed predictions are made for the dependence of the lattice Kondo resonance and the conduction electron spectral density on temperature and band filling, nc. Two low energy scales are identified in the spectra: a renormalized hybridization pseudogap scale T*, which correlates with the single ion Kondo scale, and a lattice Kondo scale T 0 <