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Fermi arcs and the hidden zeros of the Green's function in the pseudogap state

Tudor D. Stanescu·Gabriel Kotliar
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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.

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Tudor D. Stanescu, Gabriel Kotliar. 2006-02-14. Fermi arcs and the hidden zeros of the Green's function in the pseudogap state. https://doi.org/10.1103/physrevb.74.125110

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