Cosmological perturbations in modified teleparallel gravity models

By A. Golovnev, Tomi Koivisto. Journal of Cosmology and Astroparticle Physics, 2018

150 citations recorded by the source corpus.

Cosmological perturbations are considered in f(T) and in scalar-torsion f(φ)T teleparallel models of gravity. Full sets of linear perturbation equations are accurately derived and analysed at the relevant limits. Interesting features of generalisations to other teleparallel models, spatially curved backgrounds, and rotated tetrads are pointed out.

Subfields: Astronomy and Astrophysics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/2cc493252f0e569c04a6448456246f0ba37099fa

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In Astronomy and Astrophysics

In Statistical and Nonlinear Physics

Citations in the corpus

Cosmological solutions and growth index of matter perturbations in f(Q) gravity (2021, background): “On perturbing around the background Friedmann-Lemâıtre-Robertson-Walker spacetime, unlike f(T ) gravity models, strong coupling issues are absent in the case of f(Q) gravity [6, 18].”
Modified Gravity and Cosmology (2021, background): “equations, one finds four primary constraints, thereby reducing the number of propagating degrees of freedom of this theory to two (10 metric components minus four coordinate transformations minus four primary constraints) [5].”
Teleparallel theories of gravity: illuminating a fully invariant approach (2018, background): “Let us mention that at the perturbative level one has to consider perturbations to all components of the tetrad (160) and solve the antisymmetric part of the field equations, which are non-trivial even for the Cartesian tetrad (160) at the perturbative level, in order to obtain the correct cosmologi”