Work

The Spectral Dimension of the Universe is Scale Dependent

Year: 2005

Type: article

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.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.95.171301

Authors: J. Ambjørn, J. Jurkiewicz, R. Loll

Institutions: University of Copenhagen, Utrecht University, Jagiellonian University

Language: English

Topic: Noncommutative and Quantum Gravity Theories

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Nederlandse Organisatie voor Wetenschappelijk Onderzoek

Award: The quantum structure of space and time