Teleparallel Gravity and Dimensional Reductions of Noncommutative Gauge Theory
Abstract
We study dimensional reductions of noncommutative electrodynamics on flat space which lead to gauge theories of gravitation. For a general class of such reductions, we show that the noncommutative gauge fields naturally yield a Weitzenbock geometry on spacetime and that the induced diffeomorphism invariant field theory can be made equivalent to a teleparallel formulation of gravity which macroscopically describes general relativity. The Planck length is determined in this setting by the Yang-Mills coupling constant and the noncommutativity scale. The effective field theory can also contain higher-curvature and non-local terms which are characteristic of string theory. Some applications to D-brane dynamics and generalizations to include the coupling of ordinary Yang-Mills theory to gravity are also described.
Cite
@article{arxiv.hep-th/0105094,
title = {Teleparallel Gravity and Dimensional Reductions of Noncommutative Gauge Theory},
author = {Edwin Langmann and Richard J. Szabo},
journal= {arXiv preprint arXiv:hep-th/0105094},
year = {2009}
}
Comments
31 pages LaTeX; References added