346 citations · 3.7k across the 115 of their papers we have counts for
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Qualitative Analysis of Isotropic Curvature String Cosmologies
Andrew P. Billyard, Alan A. Coley, James E. Lidsey
A complete qualitative study of the dynamics of string cosmologies is presented for the class of isotopic curvature universes. These models are of Bianchi types I, V and IX and red…
Dynamical Systems in Cosmology
A. A. Coley
Dynamical systems theory is especially well-suited for determining the possible asymptotic states (at both early and late times) of cosmological models, particularly when the gover…
Interactions in Scalar Field Cosmology
Andrew P. Billyard, Alan A. Coley
We investigate spatially flat isotropic cosmological models which contain a scalar field with an exponential potential and a perfect fluid with a linear equation of state. We inclu…
Dynamics of M-Theory Cosmology
Andrew P. Billyard, Alan A. Coley, James E. Lidsey +1
A complete global analysis of spatially-flat, four-dimensional cosmologies derived from the type IIA string and M-theory effective actions is presented. A non--trivial Ramond-Ramon…
Qualitative Analysis of Early Universe Cosmologies
Andrew P Billyard, Alan A Coley, James E Lidsey
A qualitative analysis is presented for a class of homogeneous cosmologies derived from the string effective action when a cosmological constant is present in the matter sector of…
Qualitative Analysis of String Cosmologies
Andrew P. Billyard, Alan A. Coley, James E. Lidsey
A qualitative analysis is presented for spatially flat, isotropic and homogeneous cosmologies derived from the string effective action when the combined effects of a dilaton, modul…
Scaling Solutions in Robertson-Walker Spacetimes
Robert J. van den Hoogen, Alan A. Coley, David Wands
We investigate the stability of cosmological scaling solutions describing a barotropic fluid with and a non-interacting scalar field with an exponential potential $V…
Critical phenomena and a new class of self-similar spherically symmetric perfect-fluid solutions
B. J. Carr, A. A. Coley, M. Goliath +2
We consider the self-similar solutions associated with the critical behavior observed in the gravitational collapse of spherically symmetric perfect fluids with equation of state $…