Fermi arcs and the hidden zeros of the Green's function in the pseudogap state
Strongly Correlated Electrons
2009-11-11 v2
Abstract
We investigate the low energy properties of a correlated metal in the proximity of a Mott insulator within the Hubbard model in two dimensions. We introduce a new version of the Cellular Dynamical Mean Field Theory using cumulants as the basic irreducible objects. These are used for re-constructing the lattice quantities from their cluster counterparts. The zero temperature one particle Green's function is characterized by the appearance of lines of zeros, in addition to a Fermi surface which changes topology as a function of doping. We show that these features are intimately connected to the opening of a pseudogap in the one particle spectrum and provide a simple picture for the appearance of Fermi arcs.
Keywords
Cite
@article{arxiv.cond-mat/0508302,
title = {Fermi arcs and the hidden zeros of the Green's function in the pseudogap state},
author = {Tudor D. Stanescu and Gabriel Kotliar},
journal= {arXiv preprint arXiv:cond-mat/0508302},
year = {2009}
}
Comments
revised version; 5 pages, 3 figures