%0 Journal Article
%T From infinite to two dimensions through the functional renormalization group
%A C. Taranto
%A S. Andergassen
%A J. Bauer
%A K. Held
%A A. Katanin
%A W. Metzner
%A G. Rohringer
%A A. Toschi
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevLett.112.196402
%X We present a novel scheme for an unbiased and non-perturbative treatment of strongly correlated fermions. The proposed approach combines two of the most successful many-body methods, i.e., the dynamical mean field theory (DMFT) and the functional renormalization group (fRG). Physically, this allows for a systematic inclusion of non-local correlations via the flow equations of the fRG, after the local correlations are taken into account non-perturbatively by the DMFT. To demonstrate the feasibility of the approach, we present numerical results for the two-dimensional Hubbard model at half-filling.
%U http://arxiv.org/abs/1307.3475v2