When can preheating affect the CMB?

Shinji Tsujikawa, Bruce A. Bassett

研究成果: Article査読

45 被引用数 (Scopus)

抄録

We discuss the principles governing the selection of inflationary models for which preheating can affect the CMB. This is a (fairly small) subset of those models which have nonnegligible entropy/isocurvature perturbations on large scales during inflation. We study new models which belong to this class-two-field inflation with negative nonminimal coupling and hybrid/double/supernatural inflation models where the tachyonic growth of entropy perturbations can lead to the variation of the curvature perturbation, R, on super-Hubble scales. Finally, we present evidence against recent claims for the variation of R in the absence of substantial super-Hubble entropy perturbations.

本文言語English
ページ(範囲)9-17
ページ数9
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
536
1-2
DOI
出版ステータスPublished - 2002 5 30
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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