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 …

Recent experimental developments in diverse areas—ranging from cold atomic gases to
light-driven semiconductors to microcavity arrays—move systems into the focus which are …

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

In this paper, we present an overview on recent progress in studies of QCD at finite
temperature and densities within the functional renormalization group (fRG) approach. The …

This book, based on a graduate course given by the authors, is a pedagogic and self-
contained introduction to the renormalization group with special emphasis on the functional …

We review the recent progress in the understanding of the relaxation of isolated near-
integrable quantum many-body systems. Focusing on prethermalization and universal …

We explore the nature of the Bose condensation transition in driven open quantum systems,
such as exciton-polariton condensates. Using a functional renormalization group approach …

The theory of the strong interaction, quantum chromodynamics (QCD), describes the
generation of hadronic masses and the state of hadronic matter during the early stages of …

We identify a new universality class in one-dimensional driven open quantum systems with
a dark state. Salient features are the persistence of both the microscopic nonequilibrium …

We put forward a functional renormalization group approach for the direct computation of
real time correlation functions, also applicable at finite temperature and density. We …