Parametrized post-Newtonian formalism in higher-order Teleparallel Gravity
نویسندگان
چکیده
We study the parametrized post-Newtonian (PPN) limit of higher-derivative-torsion Modified Teleparallel Gravity. start from covariant formulation modified Gravity by restoring spin connection theory. Then, we perform expansion tetrad field around Minkowski background and find perturbed equations. compute PPN metric for higher-order theories which allows us to show that at this more general class are fully conservative indistinguishable General Relativity . In way, extend results were already found $F(T)$ gravity in previous works. Furthermore, our calculations reveal importance considering a second (2PN) order approximation or cosmology (PPNC) framework where additional perturbative modes coming modifications could lead new observable imprints.
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2022
ISSN: ['1475-7516', '1475-7508']
DOI: https://doi.org/10.1088/1475-7516/2022/05/010