A Gravitational Effective Action on a Finite Triangulation

Details A Gravitational Effective Action on a Finite Triangulation A Gravitational Effective Action on a Finite Triangulation

2005-12-22

arxiv.org/abs/hep-th/0512293v2

JHEP 0603 (2006) 021

Physics

High Energy Physics

High Energy Physics - Theory

5 pages; clarifications, acknowledgements, references added

Scientific paper

10.1088/1126-6708/2006/03/021

We construct a function of the edge-lengths of a triangulated surface whose
variation under a rescaling of all the edges that meet at a vertex is the
defect angle at that vertex. We interpret this function as a gravitational
effective action on the triangulation, and the variation as a trace anomaly.

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