695 citations · 1.3k across the 13 of their papers we have counts for
13 papers
Accelerating the Universe with Gravitational Waves
I. A. Brown, L. Schrempp, K. Ananda
Inflation generically produces primordial gravitational waves with a red spectral tilt. In this paper we calculate the backreaction produced by these gravitational waves on the exp…
The influence of structure formation on the cosmic expansion
Chris Clarkson, Kishore Ananda, Julien Larena
We investigate the effect that the average backreaction of structure formation has on the dynamics of the cosmological expansion, within the concordance model. Our approach in the…
On the co-existence of matter dominated and accelerating solutions in f(G)-gravity
Naureen Goheer, Rituparno Goswami, Peter K. S. Dunsby +1
Working within the theory of modified Gauss-Bonnet gravity, we show that FLRW--like power--law solutions only exist for a very special class of f(G)theories. Furthermore, we point…
Unifying the study of background dynamics and perturbations in -gravity
Sante Carloni, Kishore N. Ananda, Peter K. S. Dunsby +1
In this paper we show how the covariant gauge invariant equations for the evolution of scalar, vector and tensor perturbations for a generic -gravity theory can be recast in…
A characteristic signature of fourth order gravity
Kishore N. Ananda, Sante Carloni, Peter K. S. Dunsby
We present for the first time the complete matter power spectrum for gravity which has been derived from the fourth order scalar perturbation equations. This leads to the dis…
The cosmological background of vector modes
Teresa Hui-Ching Lu, Kishore Ananda, Chris Clarkson +1
We investigate the spectrum of vector modes today which is generated at second order by density perturbations. The vector mode background that is generated by structure formation i…