Foundational issues in f (T) gravity theory
We give a short review on the status of research on the theoretical foundations of f() gravity theories. We discuss recent results on perturbative and non-perturbative approaches, causality and degrees of freedom, and discuss future directions to follow.
Golovnev, Alexey and Guzmán, María José, "Foundational issues in f (T) gravity theory" (2021). Centre for Theoretical Physics. 196.