79 citations · 137 across the 3 of their papers we have counts for
7 papers
On Exact Proper Time Wilsonian RG Flows
A. Bonanno, S. Lippoldt, R. Percacci +1
We discuss the possibility to define exact RG equations for a UV regulated Wilsonian action based on a proper time (PT) regulator function. We start from a functional mapping which…
Zooming in on fermions and quantum gravity
Astrid Eichhorn, Stefan Lippoldt, Marc Schiffer
We zoom in on the microscopic dynamics for fermions and quantum gravity within the asymptotic-safety paradigm. A key finding of our study is the unavoidable presence of a nonminima…
How perturbative is quantum gravity?
Astrid Eichhorn, Stefan Lippoldt, Jan M. Pawlowski +2
We explore asymptotic safety of gravity-matter systems, discovering indications for a near-perturbative nature of these systems in the ultraviolet. Our results are based on the dyn…
Renormalized Functional Renormalization Group
Stefan Lippoldt
We construct a new version of the effective average action together with its flow equation. The construction entails in particular the consistency of fluctuation field and backgrou…
Correlation functions on a curved background
Benjamin Knorr, Stefan Lippoldt
We investigate gravitational correlation functions in a curved background with the help of nonperturbative renormalization group methods. Beta functions for eleven couplings are de…
Spin-base invariance of Fermions in arbitrary dimensions
Stefan Lippoldt
The concept of spin-base invariance is extended to arbitrary integer dimension . Explicit formulas for the spin connection as a function of the Dirac matrices are found.…