320 citations · 948 across the 11 of their papers we have counts for
5 papers · 1 filter
Microscopic and Macroscopic Behaviors of Palatini Modified Gravity Theories
Baojiu Li, David F. Mota, Douglas J. Shaw
We show that, within modified gravity, the non-linear nature of the field equations implies that the usual naive averaging procedure (replacing the microscopic energy-momentum by i…
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 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…
Seed Magnetic Fields from the Breaking of Lorentz Invariance
O. Bertolami, D. F. Mota
Spontaneous breaking of Lorentz invariance may take place in string theories, possibly endowing the photon with a mass. This leads to the breaking of the conformal symmetry of the…