Title : ( Linear cosmological perturbations in scalar-tensor-vector gravity )
Authors: Sara Jamali Paghaleh , Mahmood Roshan , Luca Amendola ,
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Abstract
We investigate the cosmological perturbations in the context of a Scalar-Tensor-Vector theory of Gravity known as MOG in the literature. Recent investigations show that MOG reproduces a viable background cosmological evolution comparable to ΛCDM. However, the matter dominated era is slightly different. In this paper, we study the linear matter perturbations and estimate the relevant modified gravity parameters. We show that MOG reduces the growth rate of the perturbations and comparing with the RSD data reveals that MOG suggests a higher value for , compare to ΛCDM. This point, constitute a powerful challenge to the cosmological viability of MOG.
Keywords
, Modified gravityStructure formationLinear perturbationsDark matterScalar, tensor, vector gravity
@article{paperid:1078481,
author = {Jamali Paghaleh, Sara and Roshan, Mahmood and Luca Amendola},
title = {Linear cosmological perturbations in scalar-tensor-vector gravity},
journal = {Physics Letters B},
year = {2020},
volume = {802},
number = {1},
month = {March},
issn = {0370-2693},
pages = {135238--135244},
numpages = {6},
keywords = {Modified gravityStructure formationLinear perturbationsDark matterScalar-tensor-vector gravity},
}
%0 Journal Article
%T Linear cosmological perturbations in scalar-tensor-vector gravity
%A Jamali Paghaleh, Sara
%A Roshan, Mahmood
%A Luca Amendola
%J Physics Letters B
%@ 0370-2693
%D 2020
