68 citations · 120 across the 2 of their papers we have counts for
2 papers
cond-mat.str-el2008★ 52 cited
Superperturbation solver for quantum impurity models
Hartmut Hafermann, Christoph Jung, Sergey Brener +3
We present a very efficient solver for the general Anderson impurity problem. It is based on the perturbation around a solution obtained from exact diagonalization using a small nu…
cond-mat.str-el2007★ 68 cited
Dual Fermion Approach to Susceptibility of Correlated Lattice Fermions
S. Brener, H. Hafermann, A. N. Rubtsov +2
In this paper, we show how the two-particle Green function (2PGF) can be obtained within the framework of the Dual Fermion approach. This facilitates the calculation of the suscept…