Nonsingular and ghost-free infinite derivative gravity with torsion

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 d...

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Bibliographic Details
Published in:Physical review. D 2019-05, Vol.99 (10), p.104021, Article 104021
Main Authors: de la Cruz-Dombriz, Álvaro, Maldonado Torralba, Francisco José, Mazumdar, Anupam
Format: Article
Language:English
Subjects:
Curvature
Torsion
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Summary: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.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.99.104021