Lorentz violating inflation

Sugumi Kanno, Jiro Soda

研究成果: ジャーナルへの寄稿学術誌査読

95 被引用数 (Scopus)

抄録

We explore the impact of Lorentz violation on the inflationary scenario. More precisely, we study the inflationary scenario in the scalar-vector-tensor theory where the Lorentz violating vector is constrained to be unit and timelike. It turns out that the Lorentz violating vector affects the dynamics of the chaotic inflationary model and divides the inflationary stage into two parts: the Lorentz violating stage and the standard slow roll stage. We show that the universe is expanding as a de Sitter space-time in the Lorentz violating stage although the inflaton field is rolling down the potential. More interestingly, we find the exact Lorentz violating inflationary solutions in the absence of the inflaton potential. In this case, the inflation is completely associated with the Lorentz violation.

本文言語英語
論文番号063505
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
74
6
DOI
出版ステータス出版済み - 2006
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 物理学および天文学(その他)

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