Reference results for the momentum space functional renormalization group
The functional renormalization group (FRG), an established computational method for
quantum many-body phenomena, has been subject to a diversification in topical …
quantum many-body phenomena, has been subject to a diversification in topical …
Competing instabilities of the extended Hubbard model on the triangular lattice: Truncated-unity functional renormalization group and application to moiré materials
N Gneist, L Classen, MM Scherer - Physical Review B, 2022 - APS
A simple yet paradigmatic model for the interplay of strong electronic correlations and
geometric frustration is the triangular lattice Hubbard model. Recently it was proposed that …
geometric frustration is the triangular lattice Hubbard model. Recently it was proposed that …
Electronic instabilities in Penrose quasicrystals: Competition, coexistence, and collaboration of order
Quasicrystals lack translational symmetry, but can still exhibit long-range order, promoting
them to candidates for unconventional physics beyond the paradigm of crystals. Here, we …
them to candidates for unconventional physics beyond the paradigm of crystals. Here, we …
Superconductivity of repulsive spinless fermions with sublattice potentials
We explore unconventional superconductivity of repulsive spinless fermions on square and
honeycomb lattices with staggered sublattice potentials. The two lattices can exhibit …
honeycomb lattices with staggered sublattice potentials. The two lattices can exhibit …
Review of recent developments of the functional renormalization group for systems out of equilibrium
G Camacho, C Klöckner, DM Kennes… - The European Physical …, 2022 - Springer
We recapitulate recent developments of the functional renormalization group (FRG)
approach to the steady state of systems out of thermal equilibrium. In particular, we discuss …
approach to the steady state of systems out of thermal equilibrium. In particular, we discuss …
Lindblad equation approach to the determination of the optimal working point in nonequilibrium stationary states of an interacting electronic one-dimensional system …
Using the Lindblad equation approach, we derive the range of the parameters of an
interacting one-dimensional electronic chain connected to two reservoirs in the large bias …
interacting one-dimensional electronic chain connected to two reservoirs in the large bias …
TUFRG: a scalable approach for truncated unity functional renormalization group in generic fermionic models
Describing the emergence of phases of condensed matter is one of the central challenges in
physics. For this purpose many numerical and analytical methods have been developed …
physics. For this purpose many numerical and analytical methods have been developed …
Efficient learning of a one-dimensional density functional theory
Density functional theory underlies the most successful and widely used numerical methods
for electronic structure prediction of solids. However, it has the fundamental shortcoming that …
for electronic structure prediction of solids. However, it has the fundamental shortcoming that …
Nonequilibrium properties of Berezinskii-Kosterlitz-Thouless phase transitions
C Klöckner, C Karrasch, DM Kennes - Physical Review Letters, 2020 - APS
We employ a novel, unbiased renormalization-group approach to investigate nonequilibrium
phase transitions in infinite lattice models. This allows us to address the delicate interplay of …
phase transitions in infinite lattice models. This allows us to address the delicate interplay of …
Efficient vertex parametrization for the constrained functional renormalization group for effective low-energy interactions in multiband systems
C Honerkamp - Physical Review B, 2018 - APS
We describe an efficient approximation for the electron-electron interaction in the
determination of the low-energy effective interaction in multiband lattice systems. By using …
determination of the low-energy effective interaction in multiband lattice systems. By using …