Spectral Dimension of the Universe
High Energy Physics - Theory
2010-04-06 v2 General Relativity and Quantum Cosmology
High Energy Physics - Lattice
Abstract
We measure the spectral dimension of universes emerging from nonperturbative quantum gravity, defined through state sums of causal triangulated geometries. While four-dimensional on large scales, the quantum universe appears two-dimensional at short distances. We conclude that quantum gravity may be "self-renormalizing" at the Planck scale, by virtue of a mechanism of dynamical dimensional reduction.
Keywords
Cite
@article{arxiv.hep-th/0505113,
title = {Spectral Dimension of the Universe},
author = {J. Ambjorn and J. Jurkiewicz and R. Loll},
journal= {arXiv preprint arXiv:hep-th/0505113},
year = {2010}
}
Comments
10 pages, 1 figure, added reference