The Hubbard model represents the fundamental model for interacting quantum systems and
electronic correlations. Using the two-dimensional half-filled Hubbard model at weak …

We present and implement a parquet approximation within the dual-fermion formalism
based on a partial bosonization of the dual vertex function which substantially reduces the …

We present an implementation of a truncated unity parquet solver (TUPS) which solves the
parquet equations using a truncated form-factor basis for the fermionic momenta. This way …

We present and implement a self-consistent D Γ A approach for multiorbital models and ab
initio materials calculations. It is applied to the one-band Hubbard model at various …

We present a reformulation of the functional renormalization group (fRG) for many-electron
systems, which relies on the recently introduced single-boson exchange (SBE) …

Correlated electron systems often show strong bosonic fluctuations, eg, of antiferromagnetic
nature, around a large wave vector such as q=(π, π...). These fluctuations can give rise to …

In the last decades, dynamical mean-field theory (DMFT) and its diagrammatic extensions
have been successfully applied to describe local and nonlocal correlation effects in …

We apply the boson exchange parquet solver for dual fermions to the half-filled Hubbard
model on a square lattice at small interaction. Our results establish that, in this regime …

We illustrate the algorithmic advantages of the recently introduced single-boson exchange
(SBE) formulation for the one-loop functional renormalization group (fRG), by applying it to …

The degrees of freedom that confer to strongly correlated systems their many intriguing
properties also render them fairly intractable through typical perturbative treatments. For this …