Fractal Quantum Space-Time

Details Fractal Quantum Space-Time Fractal Quantum Space-Time

2009-05-11

arxiv.org/abs/0905.1665v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

33 pages, 14 figures

Scientific paper

In this paper we calculated the spectral dimension of loop quantum gravity (LQG) using the scaling property of the area operator spectrum on spin-network states and using the scaling property of the volume and length operators on Gaussian states. We obtained that the spectral dimension of the spatial section runs from 1.5 to 3, and under particular assumptions from 2 to 3 across a 1.5 phase when the energy of a probe scalar field decreases from high to low energy in a fictitious time T. We calculated also the spectral dimension of space-time using the scaling of the area spectrum operator calculated on spin-foam models. The main result is that the effective dimension is 2 at the Planck scale and 4 at low energy. This result is consistent with two other approaches to non perturbative quantum gravity: "causal dynamical triangulation" and "asymptotically safe quantum gravity". We studied the scaling properties of all the possible curvature invariants and we have shown that the singularity problem seems to be solved in the covariant formulation of quantum gravity in terms of spin-foam models. For a particular form of the scaling (or for a particular area operator spectrum) all the curvature invariants are regular also in the Trans-Planckian regime.

Affiliated with

Also associated with

No associations

Rating

Fractal Quantum Space-Time does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fractal Quantum Space-Time, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fractal Quantum Space-Time will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-701888