The renormalization group plays an essential role in many areas of physics, both
conceptually and as a practical tool to determine the long-distance low-energy properties of …

In this contribution, we discuss the asymptotic safety scenario for quantum gravity with a
functional renormalization group approach that disentangles dynamical metric fluctuations …

We discuss the phase structure of QCD for N f= 2 and N f= 2+ 1 dynamical quark flavors at
finite temperature and baryon chemical potential. It emerges dynamically from the …

We provide analytical arguments showing that the “nonperturbative” approximation scheme
to Wilson's renormalization group known as the derivative expansion has a finite radius of …

We present a comprehensive study of the quark sector of 2+ 1 flavor QCD, based on a self-
consistent treatment of the coupled system of Schwinger-Dyson equations for the quark …

We study the asymptotic safety conjecture for quantum gravity in the presence of matter
fields. A general line of reasoning is put forward explaining why gravitons dominate the high …

We review the current state of research on electromagnetic probes in the context of heavy-
ion collisions. The focus is on thermal photons and dileptons which provide unique insights …

Gapless Dirac fermions appear as quasiparticle excitations in various condensed-matter
systems. They feature quantum critical points with critical behavior in the 2+ 1-dimensional …

The functional renormalization group (FRG) approach is a powerful tool for studies of a large
variety of systems, ranging from statistical physics over the theory of the strong interaction to …

We derive renormalised finite functional flow equations for quantum field theories in real and
imaginary time that incorporate scale transformations of the renormalisation conditions …