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Anisotropic Cosmology in the Local Limit of Nonlocal Gravity

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arxiv 2308.08281 v2 pith:SAJOVJPM submitted 2023-08-16 gr-qc astro-ph.CO

Javad Tabatabaei , Abdolali Banihashemi , Shant Baghram , Bahram Mashhoon This is my paper
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keywords anisotropicgravitylocalmodifiedcosmologicalcosmologydiscussedlimit
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Within the framework of the local limit of nonlocal gravity (NLG), we investigate a class of Bianchi type I spatially homogeneous but anisotropic cosmological models. The modified field equations are presented in this case and some special solutions are discussed in detail. This modified gravity theory contains a susceptibility function S(x) such that general relativity (GR) is recovered for S = 0. In the modified anisotropic cosmological models, we explore the contribution of S(t) and its temporal derivative to the local anisotropic cosmic acceleration. The implications of our results for observational cosmology are briefly discussed.

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  1. Dwarf galaxies in non-local gravity

    astro-ph.CO 2025-07 conditional novelty 5.0 of 10

    Non-local gravity can fit the velocity dispersions of eight dwarf spheroidals without dark matter, but its scale parameter is poorly constrained and two galaxies show tension with earlier rotation-curve results.

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