4 citations · 4 across the 1 of their papers we have counts for
13 papers · 1 filter
Testing Alternative Theories of Dark Matter with the CMB
Baojiu Li, John D. Barrow, David F. Mota +1
We propose a method to study and constrain modified gravity theories for dark matter using CMB temperature anisotropies and polarization. We assume that the theories considered her…
The Stability of an Isotropic Cosmological Singularity in Higher-Order Gravity
Jonathan Middleton, John D. Barrow
We study the stability of the isotropic vacuum Friedmann universe in gravity theories with higher-order curvature terms of the form added to the Einstein-Hilbe…
Some Late-time Asymptotics of General Scalar-Tensor Cosmologies
John D. Barrow, Douglas J. Shaw
We study the asymptotic behaviour of isotropic and homogeneous universes in general scalar-tensor gravity theories containing a p=-rho vacuum fluid stress and other sub-dominant ma…
The Cosmology of Ricci-Tensor-Squared Gravity in the Palatini Variational Approach
Baojiu Li, John D. Barrow, David F. Mota
We consider the cosmology of the Ricci-tensor-squared gravity in the Palatini variational approach. The gravitational action of standard general relativity is modified by adding a…
The Cosmology of Modified Gauss-Bonnet Gravity
Baojiu Li, John D. Barrow, David F. Mota
We consider the cosmology where some function f(G) of the Gauss-Bonnet term G is added to the gravitational action to account for the late-time accelerating expansion of the univer…
Stable Isotropic Cosmological Singularities in Quadratic Gravity
John D. Barrow, Jonathan Middleton
We show that, in quadratic lagrangian theories of gravity, isotropic cosmological singularities are stable to the presence of small scalar, vector and tensor inhomogeneities. Unlik…