102 citations · 308 across the 17 of their papers we have counts for
17 papers
A detailed study of the stability of vortons
R. A. Battye, S. J. Cotterill, J. A. Pearson
We construct and simulate the dynamics of gauged vortons - circular loops of cosmic string supported by the angular momentum of trapped charge and current and provide additional de…
Cosmological perturbations in generalised dark Lagrangians
James Edholm, Jonathan Pearson
We describe a new method to parameterise dark energy theories including massive gravity, elastic dark energy and tensor-metric theories. We first examine a framework to describe an…
The Equation of State Approach to Cosmological Perturbations in f(R) Gravity
Boris Bolliet, Richard A. Battye, Jonathan A. Pearson
The discovery of apparent cosmological acceleration has spawned a huge number of dark energy and modified gravity theories. The f(R) models of gravity are obtained when one replace…
f(R) as a dark energy fluid
R. A. Battye, B. Bolliet, J. A. Pearson
We study the equations for the evolution of cosmological perturbations in and conclude that this modified gravity model can be expressed as a dark energ…
Simulating the symmetron: domain walls and symmetry-restoring impurities
Jonathan A. Pearson
In this paper we study the dynamics of relativistic domain walls in the presence of static symmetry-restoring impurities. The field theory is precisely the same as what is known to…
Constraining dark sector perturbations I: cosmic shear and CMB lensing
Richard A. Battye, Adam Moss, Jonathan A. Pearson
We present current and future constraints on equations of state for dark sector perturbations. The equations of state considered are those corresponding to a generalized scalar fie…