317 citations · 3.1k across the 78 of their papers we have counts for
78 papers
Scalar fields in Causal Dynamical Triangulations
Jan Ambjørn, Zbigniew Drogosz, Jakub Gizbert-Studnicki +3
A typical geometry extracted from the path integral of a quantum theory of gravity might be quite complicated in the UV region. Even if such a configuration is not physical, it may…
CDT Quantum Toroidal Spacetimes: An Overview
J. Ambjorn, Z. Drogosz, J. Gizbert-Studnicki +3
Lattice formulations of gravity can be used to study non-perturbative aspects of quantum gravity. Causal Dynamical Triangulations (CDT) is a lattice model of gravity that has been…
Matter-driven change of spacetime topology
J. Ambjørn, Z. Drogosz, J. Gizbert-Studnicki +3
Using Monte-Carlo computer simulations, we study the impact of matter fields on the geometry of a typical quantum universe in the CDT model of lattice quantum gravity. The quantum…
Cosmic voids and filaments from quantum gravity
J. Ambjorn, Z. Drogosz, J. Gizbert-Studnicki +3
Using computer simulations we study the geometry of a typical quantum universe, i.e. the geometry one might expect before a possible period of inflation. We display it using coordi…
Properties of dynamical fractal geometries in the model of Causal Dynamical Triangulations
J. Ambjorn, Z. Drogosz, A. Görlich +1
We investigate the geometry of a quantum universe with the topology of the four-torus. The study of non-contractible geodesic loops reveals that a typical quantum geometry consists…
Renormalization in quantum theories of geometry
J. Ambjorn, J. Gizbert-Studnicki, A. Goerlich +2
A hallmark of non-perturbative theories of quantum gravity is the absence of a fixed background geometry, and therefore the absence in a Planckian regime of any notion of length or…