Generation of perturbation after multi-field inflation

Jinn Ouk Gong

doi:10.1016/j.physletb.2007.10.024

Generation of perturbation after multi-field inflation

Jinn Ouk Gong

Department of Science Education

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

4 Scopus citations

Abstract

We explore a new possibility that some inflaton fields in multi-field inflation models satisfy the observed value of the spectral index so that the curvature perturbation generated by them through post-inflationary dynamics may be relevant for the current observations. We illustrate this point using a simple and reasonable multi-field chaotic inflation model motivated from string theory. Possible non-Gaussianity and the tensor-to-scalar ratio are briefly addressed.

Original language	English
Pages (from-to)	165-169
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	657
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2007.10.024
State	Published - 6 Dec 2007

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10.1016/j.physletb.2007.10.024

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title = "Generation of perturbation after multi-field inflation",

abstract = "We explore a new possibility that some inflaton fields in multi-field inflation models satisfy the observed value of the spectral index so that the curvature perturbation generated by them through post-inflationary dynamics may be relevant for the current observations. We illustrate this point using a simple and reasonable multi-field chaotic inflation model motivated from string theory. Possible non-Gaussianity and the tensor-to-scalar ratio are briefly addressed.",

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AB - We explore a new possibility that some inflaton fields in multi-field inflation models satisfy the observed value of the spectral index so that the curvature perturbation generated by them through post-inflationary dynamics may be relevant for the current observations. We illustrate this point using a simple and reasonable multi-field chaotic inflation model motivated from string theory. Possible non-Gaussianity and the tensor-to-scalar ratio are briefly addressed.

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 4-5

ER -

Generation of perturbation after multi-field inflation

Abstract

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