A Gravitational Effective Action on a Finite Triangulation
High Energy Physics - Theory
2009-11-11 v2 Geometric Topology
Abstract
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.
Keywords
Cite
@article{arxiv.hep-th/0512293,
title = {A Gravitational Effective Action on a Finite Triangulation},
author = {Albert Ko and Martin Rocek},
journal= {arXiv preprint arXiv:hep-th/0512293},
year = {2009}
}
Comments
5 pages; clarifications, acknowledgements, references added