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          Institute: MPI für Gravitationsphysik     Collection: Canonical and Covariant Dynamics of Quantum Gravity     Display Documents



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ID: 436547.0, MPI für Gravitationsphysik / Canonical and Covariant Dynamics of Quantum Gravity
Improved and Perfect Actions in Discrete Gravity
Authors:Bahr, Benjamin; Dittrich, Bianca
Review Status:not specified
Audience:Not Specified
Abstract / Description:We consider the notion of improved and perfect actions within Regge calculus. These actions are constructed in such a way that they - although being defined on a triangulation - reproduce the continuum dynamics exactly, and therefore capture the gauge symmetries of General Relativity. We construct the perfect action in three dimensions with cosmological constant, and in four dimensions for one simplex. We conclude with a discussion about Regge Calculus with curved simplices, which arises naturally in this context.
External Publication Status:unpublished
Document Type:Article
Communicated by:Bianca Dittrich
Affiliations:MPI für Gravitationsphysik/Quantum Gravity and Unified Theories
MPI für Gravitationsphysik/Canonical and Covariant Dynamics of Quantum Gravity
Identifiers:LOCALID:arXiv:0907.4323
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0907.4323v1.pdf  [325,00 Kb] [Comment:arXiv:0907.4323v1 [gr-qc]]  
 
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