53 citations · 111 across the 3 of their papers we have counts for
3 papers
Role of three-particle vertex within dual fermion calculations
T. Ribic, P. Gunacker, S. Iskakov +5
We investigate the influence of self-energy diagrams beyond the two-particle vertex level within dual fermion theory. Specifically, we calculate the local three-particle vertex and…
Exact diagonalization solver for the extended dynamical mean-field theory
Darya Medvedeva, Sergei Iskakov, Friedrich Krien +2
We present an efficient exact diagonalization scheme for the extended dynamical mean-field theory and apply it to the extended Hubbard model on the square lattice with nonlocal cha…
Diagrammatic Monte Carlo for Dual Fermions
Sergei Iskakov, Andrey E. Antipov, Emanuel Gull
We introduce a numerical algorithm to stochastically sample the dual fermion perturbation series around the dynamical mean field theory, generating all topologies of two-particle i…