116 research outputs found
Evolution of the density parameter in the anisotropic DGP cosmology
Evolution of the density parameter in the anisotropic DGP braneworld model is
studied. The role of shear and cross-over scale in the evolution of
is examined for both the branches of solution in the DGP model.
The evolution is modified significantly compared to the FRW model and further
it does not depend on the value of alone. Behaviour of the
cosmological density parameter is unaltered in the late universe.
The study of decceleration parameter shows that the entry of the universe into
self accelerating phase is determined by the value of shear. We also obtain an
estimate of the shear parameter ,
which is in agreement with the constraints obtained in the literature using
data.Comment: To apper in Int.J.Mod.Phys.D, 14 pages, 6 figure
- …