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19 January 2022
 
  » arxiv » gr-qc/9512047

 Article overview


Non-minimal coupling, boundary terms and renormalization of the Einstein-Hilbert action
A.O. Barvinsky ; S.N. Solodukhin ;
Date 29 Dec 1995
Journal Nucl.Phys. B479 (1996) 305-318
Subject gr-qc hep-th
AbstractA consistent variational procedure applied to the gravitational action requires according to Gibbons and Hawking a certain balance between the volume and boundary parts of the action. We consider the problem of preserving this balance in the quantum effective action for the matter non-minimally coupled to metric. It is shown that one has to add a special boundary term to the matter action analogous to the Gibbons-Hawking one. This boundary term modifies the one-loop quantum corrections to give a correct balance for the effective action as well. This means that the boundary UV divergences do not require independent renormalization and are automatically renormalized simultaneously with their volume part. This result is derived for arbitrary non-minimally coupled matter. The example of 2D Maxwell field is considered in much detail. The relevance of the results obtained to the problem of the renormalization of the black hole entropy is discussed.
Source arXiv, gr-qc/9512047
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