91 citations · 419 across the 25 of their papers we have counts for
19 papers · 1 filter
Semiclassical and Continuum Limits of Four-Dimensional CDT
Jakub Gizbert-Studnicki
This article discusses the infrared and the (perspective) ultraviolet limits of four-dimensional Causal Dynamical Triangulations (CDT). CDT is a non-perturabtive and background-ind…
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…
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…
The higher-order phase transition in toroidal CDT
Jan Ambjørn, Grzegorz Czelusta, Jakub Gizbert-Studnicki +3
We investigate the transition between the phases and observed in four-dimensional Causal Dynamical Triangulations (CDT). We find that the critical properties of CDT with…
Quantum gravity on a torus
Jakub Gizbert-Studnicki
Causal Dynamical Triangulations (CDT) is a non-perturbative lattice approach to quantum gravity where one assumes space-time foliation into spatial hyper-surfaces of fixed topology…
Towards an UV fixed point in CDT gravity
Jan Ambjørn, Jakub Gizbert-Studnicki, Andrzej Görlich +2
CDT is an attempt to formulate a non-perturbative lattice theory of quantum gravity. We describe the phase diagram and analyse the phase transition between phase B and phase C (whi…