A New Action for Cosmology
General Relativity and Quantum Cosmology
2021-02-24 v1
Abstract
We present a new action which reproduces the cosmological sector of general relativity in both the Friedmann-Lemaitre-Robertson-Walker (FLRW) and Bianchi models. This action makes no reference to the scale factor, and is of a frictional type first examined by Herglotz. We demonstrate that the extremization of this action reproduces the usual dynamics of physical observables, and the symplectification of this action is the Einstein-Hilbert action for cosmological models. We end by discussing some of the increased explanatory power produced by considering the reduced physical ontology resulting from eliminating scale.
Keywords
Cite
@article{arxiv.2010.07329,
title = {A New Action for Cosmology},
author = {David Sloan},
journal= {arXiv preprint arXiv:2010.07329},
year = {2021}
}
Comments
15 pages