1 citations · 1 across the 1 of their papers we have counts for
7 papers
Causal perturbation theory in general FRW cosmologies II: superhorizon behaviour and initial conditions
G. Amery, E. P. S. Shellard
We describe how causality and energy-momentum conservation constrain the superhorizon behaviour of perturbation variables in a general FRW spacetime. The effect of intrinsic curvat…
Axion string cosmology and its controversies
R. A. Battye, E. P. S. Shellard
Understanding axion cosmology has important experimental consequences since it constrains the range of allowed values for the axion mass. In the standard thermal scenario, which as…
On the evolution of abelian-Higgs string networks
J. N. Moore, E. P. S. Shellard
We study the evolution of abelian-Higgs string networks in numerical simulations. These are compared against a modified velocity-dependent one scale model for cosmic string network…
Gravitational Waves From Cosmic Strings
R. A. Battye, R. R. Caldwell, E. P. S. Shellard
Gravitational waves from cosmic strings are generated in the first fractions of a second after the Big Bang, potentially providing a unprecedented probe of the early universe. We d…
Primordial gravitational waves : a probe of the early universe
R. A. Battye, E. P. S. Shellard
We discuss the potential cosmological role of gravitational wave astronomy as a probe of the very early universe. The next generation of detectors - now in production - may be able…
Current Status of Axion Cosmology
R. A. Battye, E. P. S. Shellard
We review the current status of axion cosmology in the light of recent work. We conclude that in the standard scenario, in which a global string network forms at the Peccei-Quinn p…