Adiabatic and isocurvature fluctuations of Affleck-Dine field in D-term inflation model

Masahiro Kawasaki, Fuminobu Takahashi

研究成果: Article査読

44 被引用数 (Scopus)

抄録

We reconsider fluctuations of Affleck-Dine (AD) field in a D-term inflation model. Contrary to the previous analysis, we find that the spectrum of the adiabatic fluctuations is almost scale invariant even if the AD field has a large initial value. Furthermore, we study the isocurvature fluctuations of the AD field and estimate the ratio of the isocurvature to adiabatic power spectrum. The dynamics of the inflaton and AD fields sets the upper bound for the value of the AD field, leading to a lower limit for isocurvature perturbation. It is shown that the recent cosmic microwave background data give a constraint on the D-term inflation and the AD field.

本文言語English
ページ(範囲)388-394
ページ数7
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
516
3-4
DOI
出版ステータスPublished - 2001 9月 20
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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