The Semiclassical Limit of Causal Dynamical Triangulations
High Energy Physics - Theory
2011-05-09 v1 General Relativity and Quantum Cosmology
High Energy Physics - Lattice
Abstract
Previous work has shown that the macroscopic structure of the theory of quantum gravity defined by causal dynamical triangulations (CDT) is compatible with that of a de Sitter universe. After emphasizing the strictly nonperturbative nature of this semiclassical limit we present a detailed study of the three-volume data, which allows us to re-confirm the de Sitter structure, exhibit short-distance discretization effects, and make a first detailed investigation of the presence of higher-order curvature terms in the effective action for the scale factor. Technically, we make use of a novel way of fixing the total four-volume in the simulations.
Keywords
Cite
@article{arxiv.1102.3929,
title = {The Semiclassical Limit of Causal Dynamical Triangulations},
author = {J. Ambjorn and A. Gorlich and J. Jurkiewicz and R. Loll and J. Gizbert-Studnicki and T. Trzesniewski},
journal= {arXiv preprint arXiv:1102.3929},
year = {2011}
}
Comments
30 pages, 10 figures