47 citations · 89 across the 2 of their papers we have counts for
4 papers
Can cosmological observations uniquely determine the nature of dark energy ?
Sanil Unnikrishnan
The observational effect of all minimally coupled scalar field models of dark energy can be determined by the behavior of the following two parameters : (1) equation of state param…
Scalar Field Dark Energy Perturbations and their Scale Dependence
Sanil Unnikrishnan, H. K. Jassal, T. R. Seshadri
We estimate the amplitude of perturbation in dark energy at different length scales for a quintessence model with an exponential potential. It is shown that on length scales much s…
Some Consequences of Dark Energy Density varying Exponentially with Scale Factor
Sanil Unnikrishnan, T. R. Seshadri
In this paper we have explored the consequences of a model of dark energy with its energy density varying exponentially with the scale factor. We first consider the model with $ ρ_…
Cosmic acceleration in a model of scalar-tensor gravitation
Sanil Unnikrishnan, T. R. Seshadri
In this paper we consider a model of scalar-tensor theory of gravitation in which the scalar field, determines the gravitational coupling G and has a Lagrangian of the form, $\…