MG12 - Talk detail |
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Participant |
Kazmierczak, Marcin | |
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Institution |
University of Warsaw - Ho¿a 69 - Warsaw - - Poland | |
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Session |
Talk |
Abstract |
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SQG2 |
The Poincar{\'e} Gauge Theory of Gravity and the Immirzi Parameter |
The formulation of the Einstein-Cartan theory as a gauge theory of the Poincare group will be recalled. The ambiguity of the standard minimal coupling procedure in this theory will be explained and a natural solution presented. The inclusion of the Holst term and the spin generating matter will be discussed. The issue of measurability of the Immirzi parameter in semi-classical experiments, which do not invoke to the quantum theory of geometry, will be reconsidered. |