Gravity's weight on worldline fuzziness
General Relativity and Quantum Cosmology
2013-01-22 v2 High Energy Physics - Theory
Abstract
We investigate a connection between recent results in 3D quantum gravity, providing an effective noncommutative-spacetime description, and some earlier heuristic descriptions of a quantum-gravity contribution to the fuzziness of the worldlines of particles. We show that 3D-gravity-inspired spacetime noncommutativity reflects some of the features suggested by previous heuristic arguments. Most notably, gravity-induced worldline fuzziness, while irrelevantly small on terrestrial scales, could be observably large for propagation of particles over cosmological distances.
Keywords
Cite
@article{arxiv.1207.2509,
title = {Gravity's weight on worldline fuzziness},
author = {Giovanni Amelino-Camelia and Valerio Astuti and Giacomo Rosati},
journal= {arXiv preprint arXiv:1207.2509},
year = {2013}
}
Comments
8 pages. This essay received an honorable mention in the 2012 Essay Competition of the Gravity Research Foundation