Dynamical Systems Treatment of Scalar Field Cosmologies

Details Dynamical Systems Treatment of Scalar Field Cosmologies Dynamical Systems Treatment of Scalar Field Cosmologies

1994-10-28

arxiv.org/abs/gr-qc/9410039v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, Latex, UCSBTH-94-43

Scientific paper

The conformal equivalence of some cosmological models in Brans-Dicke theory to general relativistic cosmologies with a scalar field is discussed. In the case of radiation-dominated universes, it is shown that the presence of the scalar field has a negligible impact upon the evolution of the models in the Einstein frame. It is also shown that power-law inflation in general relativity, which is conformal to ``extended'' power-law inflation in Brans-Dicke theory, is not a unique attractor for expanding closed universes, but rather that the occurence of inflation depends upon the initial kinetic energy of the scalar field.

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