Non-singular and ghost-free infinite derivative gravity with torsion
General Relativity and Quantum Cosmology
2019-05-22 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We present the most general quadratic curvature action with torsion including infinite covariant derivatives and study its implications around the Minkowski background via the Palatini approach. Provided the torsion is solely given by the background axial field, the metric and torsion are shown to decouple, and both of them can be made ghost and singularity free for a fermionic source.
Keywords
Cite
@article{arxiv.1812.04037,
title = {Non-singular and ghost-free infinite derivative gravity with torsion},
author = {Álvaro de la Cruz-Dombriz and Francisco José Maldonado Torralba and Anupam Mazumdar},
journal= {arXiv preprint arXiv:1812.04037},
year = {2019}
}
Comments
5 pages, 1 figure. Minor changes, conclusions unchanged