MG12 - Talk detail |
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Participant |
Velazquez , Mercedes | |
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Institution |
Centre de Physique Theorique. - Campus de Luminy, Case 907 - Marseille - - France | |
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Session |
Talk |
Abstract |
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SQG2 |
Husain-Kuchar model as a constrained BF theory |
We address here the problem of writing a Lagrangian formulation for the Husain-Kuchar model as a constrained BF theory motivated by the fact that spin foam models or quantum gravity are related to action principles of the BF type. The Lagrangian action principle for the Husain-Kuchar model reported here differs from a previous one found by Barbero et al in that this description involves a single constrained BF theory rather than two interacting BF theories. It is, essentially, the Plebanski action with the condition on the trace of the Lagrange multipliers removed. |