695 citations · 1k across the 9 of their papers we have counts for
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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…
Different approaches to the second order Klein-Gordon equation
Karim A. Malik, David Seery, Kishore N. Ananda
We derive the Klein--Gordon equation for a single scalar field coupled to gravity at second order in perturbation theory and leading order in slow-roll. This is done in two ways: w…
Vector modes generated by primordial density fluctuations
Teresa Hui-Ching Lu, Kishore Ananda, Chris Clarkson
While vector modes are usually ignored in cosmology since they are not produced during inflation they are inevitably produced from the interaction of density fluctuations of differ…
Cosmo-dynamics and dark energy with non-linear equation of state: a quadratic model
Kishore N. Ananda, Marco Bruni
We investigate the general relativistic dynamics of Robertson-Walker models with a non-linear equation of state (EoS), focusing on the quadratic case P = P_0 + αρ+ βρ^2. This may b…