3 research outputs found
Unified dark fluid in Brans-Dicke theory
Anisotropic dark energy cosmological models are constructed in the frame work
of generalised Brans-Dicke theory with a self interacting potential. Wet dark
fluid characterized by a linear equation of state is considered as the source
of dark energy. Shear scalar is considered to be proportional to the expansion
scalar simulating an anisotropic relationship among the directional expansion
rates. The dynamics of the universe in presence of wet dark fluid in
anisotropic background have been discussed. The presence of evolving scalar
field makes it possible to get accelerating phase of expansion even for a
linear relationship among the directional Hubble rates. It is found that, the
anisotropy in expansion rates does not affect the scalar field, self
interacting potential but it controls the non-evolving part of the Brans- Dicke
parameter.Comment: 27 pages, 8 figures, to appear in Eur. Phys. J.