In Search of the Spacetime Torsion
arXiv:0704.1141
Abstract
Whether torsion plays or not a role in the description of the gravitational interaction is a problem that can only be solved by experiment. This is, however, a difficult task: since there are different possible interpretations for torsion, there is no a model-independent way to look for it. In these notes, two different possibilities will be reviewed, their consistency analyzed, and the corresponding experimental outputs briefly discussed.
Latex, 4 pages. Talk presented at the Rencontres de Moriond on Gravitational Waves and Experimental Gravity, La Thuile, Italy (March 11-18, 2007)