16 citations · 38 across the 7 of their papers we have counts for
7 papers
One-loop correction to primordial tensor modes during radiation era
Markus B. Fröb, Dražen Glavan, Paolo Meda +1
The ability to infer properties of primordial inflation relies on the conservation of the superhorizon perturbations between their exit during inflation, and their re-entry during…
Petz-Rényi relative entropy in QFT from modular theory
Markus B. Fröb, Leonardo Sangaletti
We consider the generalization of the Araki-Uhlmann formula for relative entropy to Petz-Rényi relative entropy. We compute this entropy for a free scalar field in the Minkowski we…
Kerr-Schild metrics in teleparallel gravity
Markus B. Fröb
We show that the Kerr-Schild ansatz can be extended from the metric to the tetrad, and then to teleparallel gravity where curvature vanishes but torsion does not. We derive the equ…
Trace anomaly for Weyl fermions using the Breitenlohner-Maison scheme for
S. Abdallah, S. A. Franchino-Viñas, M. B. Fröb
We revisit the computation of the trace anomaly for Weyl fermions using dimensional regularization. For a consistent treatment of the chiral gamma matrix in dimensional regul…
Strict deformations of quantum field theory in de Sitter spacetime
M. B. Fröb, A. Much
We propose a new deformed Rieffel product for functions in de Sitter spacetime, and study the resulting deformation of quantum field theory in de Sitter using warped convolutions.…
Recursive construction of the operator product expansion in curved space
Markus B Fröb
I derive a formula for the coupling-constant derivative of the coefficients of the operator product expansion (Wilson OPE coefficients) in an arbitrary curved space, as the natural…
One-loop quantum gravitational backreaction on the local Hubble rate
Markus B. Fröb
We determine corrections to the Hubble rate due to graviton loops in a cosmological background spacetime of constant deceleration parameter. The corrections are gauge-invariant, ba…