http://arxiv.org/abs/1405.4137
How to detect spacetime torsion? In this essay we provide the theoretical basis for an answer to this question. Multipolar equations of motion for a very general class of gravitational theories with nonminimal coupling in spacetimes admitting torsion are given. Our findings provide a framework for the systematic testing of whole classes of theories with the help of extended test bodies. One surprising feature of nonminimal theories turns out to be their potential sensitivity to torsion of spacetime even in experiments with ordinary (not microstructured) test matter.
D. Puetzfeld and Y. Obukhov
Tue, 20 May 14
44/62
Comments: 6 pages, this essay received a honorable mention in the 2014 essay competition of the Gravity Research Foundation
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