https://doi.org/10.1140/epjc/s10052-021-09019-6
Regular Article – Theoretical Physics
Ghost-free higher-order theories of gravity with torsion
1
Cosmology and Gravity Group, Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701, Cape Town, South Africa
2
Van Swinderen Institute, University of Groningen, 9747 AG, Groningen, The Netherlands
b
f.j.maldonado.torralba@rug.nl
Received:
23
June
2020
Accepted:
4
March
2021
Published online:
17
March
2021
In this manuscript we will present the theoretical framework of the recently proposed infinite derivative theory of gravity with a non-symmetric connection. We will explicitly derive the field equations at the linear level and obtain new solutions with a non-trivial form of the torsion tensor in the presence of a fermionic source, and show that these solutions are both ghost and singularity-free.
© The Author(s) 2021
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