102 citations · 308 across the 17 of their papers we have counts for
4 papers · 1 filter
Simple numerical implementation of general dark energy models
Jolyon K. Bloomfield, Jonathan A. Pearson
We present a formalism for the numerical implementation of general theories of dark energy, combining the computational simplicity of the equation of state for perturbations approa…
Computing model independent perturbations in dark energy and modified gravity
Richard A. Battye, Jonathan A. Pearson
We present a methodology for computing model independent perturbations in dark energy and modified gravity. This is done from the Lagrangian for perturbations, by showing how field…
Parameterizing dark sector perturbations via equations of state
Richard A. Battye, Jonathan A. Pearson
The evolution of perturbations is a crucial part of the phenomenology of the dark sector cosmology. We advocate parameterizing these perturbations using equations of state for the…
Massive gravity, the elasticity of space-time and perturbations in the dark sector
Richard A. Battye, Jonathan A. Pearson
We consider a class of modified gravity models where the terms added to the standard Einstein-Hilbert Lagrangian are just a function of the metric only. For linearized perturbation…