30 citations · 30 across the 1 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…
The Asymptotic Behaviour of Cosmological Models Containing Matter and Scalar Fields
Andrew P. Billyard
The asymptotic behaviour of two classes of scalar field cosmological models are studied using the theory of dynamical systems: general relativistic Bianchi models containing matter…
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…
Scalar Field Cosmologies with Barotropic Matter: Models of Bianchi class B
A. P. Billyard, A. A. Coley, R. J. van den Hoogen +2
We investigate in detail the qualitative behaviour of the class of Bianchi type B spatially homogeneous cosmological models in which the matter content is composed of two non-inter…
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…