42 citations · 152 across the 5 of their papers we have counts for
5 papers
How round is the quantum de Sitter universe?
N. Klitgaard, R. Loll
We investigate the quantum Ricci curvature, which was introduced in earlier work, in full, four-dimensional quantum gravity, formulated nonperturbatively in terms of Causal Dynamic…
Geometric flux formula for the gravitational Wilson loop
N. Klitgaard, R. Loll, Marcus Reitz +1
Finding diffeomorphism-invariant observables to characterize the properties of gravity and spacetime at the Planck scale is essential for making progress in quantum gravity. The ho…
Quantizing quantum Ricci curvature
N. Klitgaard, R. Loll
Quantum Ricci curvature has been introduced recently as a new, geometric observable characterizing the curvature properties of metric spaces, without the need for a smooth structur…
Introducing Quantum Ricci Curvature
N. Klitgaard, R. Loll
Motivated by the search for geometric observables in nonperturbative quantum gravity, we define a notion of coarse-grained Ricci curvature. It is based on a particular way of extra…
Characteristics of the new phase in CDT
J. Ambjørn, J. Gizbert-Studnicki, A. Görlich +3
Causal Dynamical Triangulations (CDT), a candidate theory of nonperturbative quantum gravity in 4D, turns out to have a rich phase structure. We investigate the recently discovered…