Outputs (2)

Massive gravity, the elasticity of space-time, and perturbations in the dark sector (2013)
Journal Article
Battye, R., & Pearson, J. (2013). Massive gravity, the elasticity of space-time, and perturbations in the dark sector. Physical Review D, 88(8), Article 084004. https://doi.org/10.1103/physrevd.88.084004

We consider a class of phenomenological modified gravity models where the terms added to the standard Einstein-Hilbert Lagrangian are just a function of the metric only. For linearized perturbations around an isotropic space-time, this class of model... Read More about Massive gravity, the elasticity of space-time, and perturbations in the dark sector.

Parametrizing dark sector perturbations via equations of state (2013)
Journal Article
Battye, R. A., & Pearson, J. A. (2013). Parametrizing dark sector perturbations via equations of state. Physical Review D, 88(6), Article 061301. https://doi.org/10.1103/physrevd.88.061301

The evolution of perturbations is a crucial part of the phenomenology of the dark sector cosmology. We advocate parametrizing these perturbations using equations of state for the entropy perturbation and the anisotropic stress. For small perturbation... Read More about Parametrizing dark sector perturbations via equations of state.