Some considerations on the Mac Dowell-Mansouri action
arXiv:0805.3558 · doi:10.1088/1126-6708/2008/06/069
Abstract
A precise relation is established between the Stelle-West formulation of the Mac Dowell-Mansouri approach to a gauge theory of gravity and the approach based on a gauged Wess-Zumino-Witten term. In particular, it is shown that a consistent truncation of the latter correspond to the former. A brief review of the Lovelock-Chern-Simons motivation behind the gauged WZW ones is also done.
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