3 papers
hep-th2025
Functional Renormalization Group flows as diffusive Hamilton-Jacobi-type equations
Adrian Koenigstein, Martin J. Steil, Stefan Floerchinger
In order to find reliable and efficient numerical approximation schemes, we suggest to identify the Functional Renormalization Group flow equations of one-particle irreducible two-…
hep-ph2025
Functional renormalization of QCD in dimensions: four-fermion interactions from quark-gluon dynamics
Eric Oevermann, Adrian Koenigstein, Stefan Floerchinger
Quantum Chromodynamics in two spacetime dimensions is investigated with the Functional Renormalization Group. We use a functional formulation with covariant gauge fixing and derive…
cond-mat.stat-mech2024
Functional Renormalization Group meets Computational Fluid Dynamics: RG flows in a multi-dimensional field space
Niklas Zorbach, Adrian Koenigstein, Jens Braun
Within the Functional Renormalisation Group (FRG) approach, we present a fluid-dynamical approach to solving flow equations for models living in a multi-dimensional field space. To…