Causal set d'Alembertians for various dimensions
General Relativity and Quantum Cosmology
2013-09-13 v2
Abstract
We propose, for dimension d, a discrete Lorentz invariant operator on scalar fields that approximates the Minkowski spacetime scalar d'Alembertian. For each dimension, this gives rise to a scalar curvature estimator for causal sets, and thence to a proposal for a causal set action.
Cite
@article{arxiv.1305.2588,
title = {Causal set d'Alembertians for various dimensions},
author = {Fay Dowker and Lisa Glaser},
journal= {arXiv preprint arXiv:1305.2588},
year = {2013}
}
Comments
14 pages, 1 figure, published in Class. Quantum Grav (text and figure were updated to agree with the published version)