159 citations · 608 across the 16 of their papers we have counts for
8 papers · 1 filter
Reflection positivity in higher derivative scalar theories
Francesca Arici, Daniel Becker, Chris Ripken +2
Reflection positivity constitutes an integral prerequisite in the Osterwalder-Schrader reconstruction theorem which relates quantum field theories defined on Euclidean space to the…
On avoiding Ostrogradski instabilities within Asymptotic Safety
Daniel Becker, Chris Ripken, Frank Saueressig
We study the renormalization group flow of gravity coupled to scalar matter using functional renormalization group techniques. The novel feature is the inclusion of higher-derivati…
Is there a -function in 4D Quantum Einstein Gravity?
Daniel Becker, Martin Reuter
We describe a functional renormalization group-based method to search for `-like' functions with properties similar to that in 2D conformal field theory. It exploits the mode co…
Towards a -function in 4D quantum gravity
Daniel Becker, Martin Reuter
We develop a generally applicable method for constructing functions, , which have properties similar to Zamolodchikov's -function, and are geometrically natural objects relat…
Propagating gravitons vs. dark matter in asymptotically safe quantum gravity
Daniel Becker, Martin Reuter
Within the Asymptotic Safety scenario, we discuss whether Quantum Einstein Gravity (QEG) can give rise to a semi-classical regime of propagating physical gravitons (gravitational w…
En route to Background Independence: Broken split-symmetry, and how to restore it with bi-metric average actions
Daniel Becker, Martin Reuter
The most momentous requirement a quantum theory of gravity must satisfy is Background Independence, necessitating in particular an ab initio derivation of the arena all non-gravita…
Asymptotic Safety and Black Hole Thermodynamics
D. Becker, M. Reuter
We present recent results on the non-perturbative renormalization group flow of Quantum Einstein Gravity (QEG) on spacetime manifolds with boundaries. As an application, novel quan…
Running boundary actions, Asymptotic Safety, and black hole thermodynamics
D. Becker, M. Reuter
Previous explorations of the Asymptotic Safety scenario in Quantum Einstein Gravity (QEG) by means of the effective average action and its associated functional renormalization gro…