Application of Gradient Expansion to Inflationary Universe

Details Application of Gradient Expansion to Inflationary Universe Application of Gradient Expansion to Inflationary Universe

1994-11-03

arxiv.org/abs/astro-ph/9411013v1

Class.Quant.Grav. 13 (1996) 705-714

Astronomy and Astrophysics

Astrophysics

11 pages, revtex

Scientific paper

10.1088/0264-9381/13/4/010

Using the long wave perturbation scheme(gradient expansion), the effect of
inhomogeneity on the inflationary phase is investigated. We solved the
perturbation equation of which source term comes from inhomogeneity of a scalar
field and a seed metric. The result indicates that sub-horizon scale
inhomogeneity strongly affects the onset of inflation.

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