The general gravitational Lagrangian with deformed covariance
General Relativity and Quantum Cosmology
2020-11-25 v1
Abstract
We derive the gravitational Lagrangian to all orders of curvature when the canonical constraint algebra is deformed by a phase space function as predicted by some studies into loop quantum cosmology. The deformation function seems to be required to satisfy a non-linear equation usually found in fluid mechanics, and can form discontinuities quite generally.
Keywords
Cite
@article{arxiv.1901.07383,
title = {The general gravitational Lagrangian with deformed covariance},
author = {Rhiannon Cuttell and Mairi Sakellariadou},
journal= {arXiv preprint arXiv:1901.07383},
year = {2020}
}
Comments
15 pages, 2 figures. arXiv admin note: text overlap with arXiv:1812.07530