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25 September 2022
 
  » arxiv » 0907.4064

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Gravity as BF theory plus potential
Kirill Krasnov ;
Date 23 Jul 2009
AbstractSpin foam models of quantum gravity are based on Plebanski’s formulation of general relativity as a constrained BF theory. We give an alternative formulation of gravity as BF theory plus a certain potential term for the B-field. When the potential is taken to be infinitely steep one recovers general relativity. For a generic potential the theory still describes gravity in that it propagates just two graviton polarizations. The arising class of theories is of the type amenable to spin foam quantization methods, and, we argue, may allow one to come to terms with renormalization in the spin foam context.
Source arXiv, 0907.4064
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