Scalar fields and anisotropy in cosmological models

Details Scalar fields and anisotropy in cosmological models Scalar fields and anisotropy in cosmological models

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phrvd..46.1391d&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 46, Issue 4, 15 August 1992, pp.1391-1398

Physics

25

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Scientific paper

We study the dynamics of a homogeneous, anisotropic, spatially flat universe filled with a scalar field minimally coupled to gravity. It turns out that in the general case the dynamical system possesses three Noether symmetries and when the potential of the scalar field is constant an additional, fourth symmetry appears. In this case the dynamical equations can be explicitly integrated. We study the properties of this class of solutions. For the generic potential anisotropy prevents early inflation, but inflation may appear at a later stage when anisotropy becomes much weaker.

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