523 citations · 2.1k across the 21 of their papers we have counts for
21 papers
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…
Renormalization Group Flow in CDT
J. Ambjorn, A. Goerlich, J. Jurkiewicz +2
We perform a first investigation of the coupling constant flow of the nonperturbative lattice model of four-dimensional quantum gravity given in terms of Causal Dynamical Triangula…
Exploring Torus Universes in Causal Dynamical Triangulations
T. G. Budd, R. Loll
Motivated by the search for new observables in nonperturbative quantum gravity, we consider Causal Dynamical Triangulations (CDT) in 2+1 dimensions with the spatial topology of a t…
Causal Dynamical Triangulations without Preferred Foliation
S. Jordan, R. Loll
We introduce a generalized version of the Causal Dynamical Triangulations (CDT) formulation of quantum gravity, in which the regularized, triangulated path integral histories retai…
Baby Universes Revisited
J. Ambjorn, J. Barkley, T. Budd +1
The behaviour of baby universes has been an important ingredient in understanding and quantifying non-critical string theory or, equivalently, models of two-dimensional Euclidean q…