Improved and Perfect Actions in Discrete Gravity
General Relativity and Quantum Cosmology
2010-04-15 v1 High Energy Physics - Lattice
Abstract
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.
Cite
@article{arxiv.0907.4323,
title = {Improved and Perfect Actions in Discrete Gravity},
author = {Benjamin Bahr and Bianca Dittrich},
journal= {arXiv preprint arXiv:0907.4323},
year = {2010}
}
Comments
28 pages, 2 figures