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arXiv · 2012.00696

Non-trivial Minkowski backgrounds in f(T) gravity

Alexey Golovnev·Maria-Jose Guzman
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Abstract

Boosted and rotated tetrad backgrounds for the Minkowski space are studied in $f(T)$ gravity. We perform Lorentzian perturbations at first order around non-trivial backgrounds and show that some Lorentz modes can exhibit non-trivial dynamics and can propagate in time. This remarkable feature gives evidence of additional mode(s) in the Lorentzian sector which have no precedent in Lorentz-violating modified gravities, however they can cast doubts onto even theoretical viability of these models.

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Alexey Golovnev, Maria-Jose Guzman. 2020-12-01. Non-trivial Minkowski backgrounds in f(T) gravity. https://doi.org/10.1103/physrevd.103.044009

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