Regular Article - Theoretical Physics
Closed inflationary universe with tachyonic field
Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla, 4950, Valparaíso, Chile
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Published online: 1 June 2007
In this article we study closed inflationary universe models by using a tachyonic field theory. We determine and characterize the existence of a universe which has Ω>1 and which describes a period of inflation. We find that the considered models are less restrictive compared to the standard ones with a scalar field. We use recent astronomical observations to constrain the parameters appearing in the model. The results obtained are compared to those found in the standard scalar field inflationary universes.
© Springer-Verlag Berlin Heidelberg, 2007