Application of gradient expansion to an inflationary universe

Yasusada Nambu; Atsushi Taruya

doi:10.1088/0264-9381/13/4/010

Application of gradient expansion to an inflationary universe

Yasusada Nambu, Atsushi Taruya

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

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

Original language	English
Pages (from-to)	705-713
Number of pages	9
Journal	Classical and Quantum Gravity
Volume	13
Issue number	4
DOIs	https://doi.org/10.1088/0264-9381/13/4/010
Publication status	Published - 1996
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1088/0264-9381/13/4/010

Cite this

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

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AU - Taruya, Atsushi

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

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Application of gradient expansion to an inflationary universe

Abstract

All Science Journal Classification (ASJC) codes

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