695 citations · 1.3k across the 13 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…
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…
A detailed analysis of structure growth in theories of gravity
Kishore N. Ananda, Sante Carloni, Peter K. S. Dunsby
We investigate the connection between dark energy and fourth order gravity by analyzing the behavior of scalar perturbations around a Friedmann-Robertson-Walker background. The evo…
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…