The effective kinetic term in CDT

Abstract

We report on recently performed simulations of Causal Dynamical Triangulations (CDT) in 2+1 dimensions aimed at studying its effective dynamics in the continuum limit. Two pieces of evidence from completely different measurements are presented suggesting that three-dimensional CDT is effectively described by an action with kinetic term given by a modified Wheeler-De Witt metric. These observations could strengthen an earlier observed connection between CDT and Horava-Lifshitz gravity. One piece of evidence comes from measurements of the modular parameter in CDT simulations with spatial topology of a torus, the other from measurements of local metric fluctuations close to a fixed spatial boundary.

4 pages, 4 figures, based on a talk given at Loops '11, Madrid, to appear in Journal of Physics: Conference Series (JPCS)

References in corpus (2)

• Quantum Gravity at a Lifshitz Point
• CDT meets Horava-Lifshitz gravity

Cited by in corpus (9)

• Quantum Gravity via Causal Dynamical Triangulations
• The phase structure of Causal Dynamical Triangulations with toroidal spatial topology
• More on "Little Lambda" in Hořava-Lifshitz Gravity
• Capturing the phase diagram of (2+1)-dimensional CDT using a balls-in-boxes model
• The phase structure and effective action of 3D CDT at higher spatial genus
• On the Nature of Spatial Universes in 3D Lorentzian Quantum Gravity
• Quantum Gravity, Hydrodynamics and Emergent Cosmology: A Collection of Perspectives
• Minisuperspace results for causal dynamical triangulations
• Landau Theory of Causal Dynamical Triangulations