Numerous correlated electron systems exhibit a strongly scale-dependent behavior. Upon
lowering the energy scale, collective phenomena, bound states, and new effective degrees …

We analyze the competition between antiferromagnetism and superconductivity in the two-
dimensional Hubbard model by combining a functional renormalization group flow with a …

We use nonperturbative renormalization group techniques to calculate the momentum
dependence of thermal fluctuations of graphene, based on a self-consistent calculation of …

We present a consistent fusion of functional renormalization group and mean-field theory
which explicitly introduces a bosonic field via a Hubbard-Stratonovich transformation at the …

We generalize the vertex expansion approach of the functional renormalization group to non-
Hermitian systems. As certain anomalous expectation values might not vanish, additional …

We investigate the properties of crystalline phantom membranes, at the crumpling transition
and in the flat phase, using a nonperturbative renormalization group approach. We avoid a …

We present a comprehensive analysis of quantum fluctuation effects in the superfluid ground
state of an attractively interacting Fermi system, employing the attractive Hubbard model as …

We investigate the single-particle spectral density of interacting bosons within the
nonperturbative functional renormalization group technique. The flow equations for a Bose …

We use the spin functional renormalization group recently developed by two of us [Krieg and
Kopietz, Phys. Rev. B 99, 060403 (R)(2019) 2469-9950 10.1103/PhysRevB. 99.060403] to …

Neural dynamics is often investigated with tools from bifurcation theory. However, many
neuron models are stochastic, mimicking fluctuations in the input from unknown parts of the …