100 citations · 142 across the 2 of their papers we have counts for
2 papers
cond-mat.str-el2017★ 42 cited
Conservation in two-particle self-consistent extensions of dynamical-mean-field-theory
F. Krien, E. G. C. P. van Loon, H. Hafermann +3
Extensions of dynamical-mean-field-theory (DMFT) make use of quantum impurity models as non-perturbative and exactly solvable reference systems which are essential to treat the str…
cond-mat.str-el2014★ 100 cited
Superconductivity, antiferromagnetism and phase separation in the two-dimensional Hubbard model: A dual-fermion approach
Junya Otsuki, Hartmut Hafermann, Alexander I. Lichtenstein
The dual-fermion approach offers a way to perform diagrammatic expansion around the dynamical mean-field theory. Using this formalism, the influence of antiferromagnetic fluctuatio…