30 citations · 63 across the 10 of their papers we have counts for
10 papers
Asymptotic Safety within on-shell perturbation theory
Kevin Falls, Renata Ferrero
We investigate the renormalisation of Einstein gravity using a novel subtraction scheme in dimensional regularisation. The one-loop beta function for Newton's constant receives con…
The cosmological constant problem and the effective potential of a gravity-coupled scalar
Renata Ferrero, Roberto Percacci
We consider a quantum scalar field in a classical (Euclidean) De Sitter background, whose radius is fixed dynamically by Einstein's equations. In the case of a free scalar, it has…
-cutoff regularization for fields on hyperbolic space
Rudrajit Banerjee, Maximilian Becker, Renata Ferrero
We apply a novel background independent regularization scheme, the -cutoffs, to self-consistently quantize scalar and metric fluctuations on the maximally symmetric but non-comp…
Quadratic gravity potentials in de Sitter spacetime from Feynman diagrams
Renata Ferrero, Chris Ripken
We employ a manifestly covariant formalism to compute the tree-level amputated Green's function of non-minimally coupled scalar fields in quadratic gravity in a de Sitter backgroun…
On the possibility of a novel (A)dS/CFT relationship emerging in Asymptotic Safety
Renata Ferrero, Martin Reuter
Quantum Einstein Gravity (QEG), nonperturbatively renormalized by means of a certain asymptotically safe renormalization group (RG) trajectory, is explored by solving its scale dep…
The Spectral Geometry of de Sitter Space in Asymptotic Safety
Renata Ferrero, Martin Reuter
Within the functional renormalization group approach to Background Independent quantum gravity, we explore the scale dependent effective geometry of the de Sitter solution dS…
De Sitter scattering amplitudes in the Born approximation
Renata Ferrero, Chris Ripken
We present a covariant framework to compute scattering amplitudes and potentials in a de Sitter background. In this setting, we compute the potential of a graviton-mediated scatter…
Relational observables in Asymptotically safe gravity
Alessio Baldazzi, Kevin Falls, Renata Ferrero
We introduce an approach to compute the renormalisation group flow of relational observables in quantum gravity which evolve from their microscopic expressions towards the full qua…
Towards a Geometrization of Renormalization Group Histories in Asymptotic Safety
Renata Ferrero, Martin Reuter
Considering the scale dependent effective spacetimes implied by the functional renormalization group in d-dimensional Quantum Einstein Gravity, we discuss the representation of ent…
Dynamical diffeomorphisms
Renata Ferrero, Roberto Percacci
We construct a general effective dynamics for diffeomorphisms of spacetime, in a fixed external metric. Though related to familiar models of scalar fields as coordinates, our model…