Natural hybrid inflation model with large non-Gaussianity

Ki Young Choi; Bumseok Kyae

doi:10.1016/j.physletb.2011.11.045

Natural hybrid inflation model with large non-Gaussianity

Ki Young Choi, Bumseok Kyae

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

8 Scopus citations

Abstract

We propose an inflationary model ("natural hybrid model"), which combines the supersymmetric hybrid model and the natural inflation model to achieve the spectral index of 0.96, and the axion decay constant smaller than the Planck scale, f≪M_P. By introducing both U(1)_R and a shift symmetry and employing the minimal Kähler potential, the eta-problem can be still avoided. The two inflaton fields in this model can admit large non-Gaussianity.

Original language	English
Pages (from-to)	243-250
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	706
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2011.11.045
State	Published - 5 Jan 2012
Externally published	Yes

Keywords

Hybrid inflation
Natural inflation
Non-Gaussianity
Spectral index

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10.1016/j.physletb.2011.11.045

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abstract = "We propose an inflationary model ({"}natural hybrid model{"}), which combines the supersymmetric hybrid model and the natural inflation model to achieve the spectral index of 0.96, and the axion decay constant smaller than the Planck scale, f≪MP. By introducing both U(1)R and a shift symmetry and employing the minimal K{\"a}hler potential, the eta-problem can be still avoided. The two inflaton fields in this model can admit large non-Gaussianity.",

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AU - Kyae, Bumseok

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AB - We propose an inflationary model ("natural hybrid model"), which combines the supersymmetric hybrid model and the natural inflation model to achieve the spectral index of 0.96, and the axion decay constant smaller than the Planck scale, f≪MP. By introducing both U(1)R and a shift symmetry and employing the minimal Kähler potential, the eta-problem can be still avoided. The two inflaton fields in this model can admit large non-Gaussianity.

KW - Hybrid inflation

KW - Natural inflation

KW - Non-Gaussianity

KW - Spectral index

UR - https://www.scopus.com/pages/publications/84155164267

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DO - 10.1016/j.physletb.2011.11.045

M3 - Article

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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 -

Natural hybrid inflation model with large non-Gaussianity

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Keywords

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