Exact inhomogeneous Einstein-Maxwell dilaton cosmologies
Oct, 2000Citations per year
Abstract:
We present solution generating techniques which permit to construct exact inhomogeneous and anisotropic cosmological solutions to a four-dimensional low energy limit of string theory containing non-minimally interacting electromagnetic and dilaton fields. Some explicit homogeneous and inhomogeneous cosmological solutions are constructed. For example, inhomogeneous exact solutions presenting Gowdy - type EMD universe are obtained. The asymptotic behaviour of the solutions is investigated. The asymptotic form of the metric near the initial singularity has a spatially varying Kasner form. The character of the space-time singularities is discussed. The late evolution of the solutions is described by a background homogeneous and anisotropic universe filled with weakly interacting gravitational, dilatonic and electromagnetic waves.- general relativity
- gauge field theory: U(1)
- field theory: scalar
- field equations: solution
- asymptotic behavior
- cosmological model
- Einstein-Maxwell equation
- dilaton
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