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

The parquet formalism and Hedin's GW γ approach are unified into a single theory of vertex
corrections, corresponding to an exact reformulation of the parquet equations in terms of …

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 …

The interaction of light with solids gives rise to new bosonic quasiparticles, with the exciton
being—undoubtedly—the most famous of these polaritons. While excitons are the generic …

We examine the phase diagram of the extended Hubbard model on a square lattice, for both
attractive and repulsive nearest-neighbor interactions, using CDMFT+ HFD, a combination …

Understanding competing instabilities in systems with correlated fermions remains one of
the holy grails of modern condensed matter physics. Among the fermionic lattice models …

Systems with strong electronic Coulomb correlations often display rich phase diagrams
exhibiting different ordered phases involving spin, charge, or orbital degrees of freedom …

Microscopic theory of a high T c cuprate Bi 2 Sr 2 CaCu 2 O 8+ x based on main pairing
channel of electrons in CuO planes due to 40mev lateral vibrations of the apical oxygen …

We generalize the recently introduced single-boson exchange formalism to nonlocal
interactions. In the functional renormalization group application to the extended Hubbard …