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Title: Post-Newtonian limit of teleparallel Horndeski gravity
Authors: Bahamonde, Sebastian
Dialektopoulos, Konstantinos F.
Hohmann, Manuel
Said, Jackson
Keywords: Newtonian cosmology
Scalar field theory
Lagrange equations
Gravitational waves
Perturbation (Astronomy)
Issue Date: 2020
Publisher: Institute of Physics Publishing Ltd.
Citation: Bahamonde, S., Dialektopoulos, K. F., Hohmann, M., & Said, J. L. (2020). Post-Newtonian limit of teleparallel Horndeski gravity. Classical and Quantum Gravity, 38(2), 025006.
Abstract: We consider the newly proposed Bahamonde–Dialektopoulos–Levi Said (BDLS) theory, that is the Horndeski analog in the teleparallel framework and thus contains a non-minimally coupled scalar field, including higher order derivatives, that leads however to second order field equations both for the tetrad and the scalar field. This theory was mostly constructed to revive those models that were severely constrained in the scalar–tensor version of the theory from the GW170817, but includes also much richer phenomenology because of the nature of the torsion tensor. For this theory we determine the parameterized post-Newtonian (PPN) limit, calculate the full set of post-Newtonian parameters and highlight some special cases.
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