There exists presently considerable debate over the question whether local Coulomb interactions can explain the absence of the small e<Superscript>′</Superscript> <Subscript>g</Subscript> Fermi surface hole pockets in photoemission studies of Na<Subscript>0.3</Subscript>CoO<Subscript>2</Subscript>. By comparing dynamical mean field results for different single particle Hamiltonians and...</subscript></subscript></subscript></superscript>