Anisotropic Cosmology in the Local Limit of Nonlocal Gravity

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 th...

Full description

Bibliographic Details
Main Authors: Javad Tabatabaei, Abdolali Banihashemi, Shant Baghram, Bahram Mashhoon
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Universe
Subjects:
Online Access:https://www.mdpi.com/2218-1997/9/9/377
Description
Summary: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 <i>S</i>(<i>x</i>) such that general relativity (GR) is recovered for <i>S</i> = 0. In the modified anisotropic cosmological models, we explore the contribution of <i>S</i>(<i>t</i>) and its temporal derivative to the local anisotropic cosmic acceleration. The implications of our results for observational cosmology are briefly discussed.
ISSN:2218-1997