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Onset of inflation in inhomogeneous cosmology

Osamu Iguchi·Hideki Ishihara
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Abstract

We study how the initial inhomogeneities of the universe affect the onset of inflation in the closed universe. We consider the model of a chaotic inflation which is driven by a massive scalar field. In order to construct an inhomogeneous universe model, we use the long wavelength approximation ( the gradient expansion method ). We show the condition of the inhomogeneities for the universe to enter the inflationary phase.

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Osamu Iguchi, Hideki Ishihara. 1996-11-20. Onset of inflation in inhomogeneous cosmology. https://doi.org/10.1103/physrevd.56.3216

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