Gravitational effects on inflaton decay

  • 分類 理論セミナー
  • 開始 2015/04/27(月)15:00
  • 終了 2015/04/27(月)16:00
  • 会場 研究本館1階会議室1
  • 講演タイトル
  • 講演者 神野隆介 氏 (東京大学)
  • 言語 英語/English
  • 連絡先 山本 恵、
  • ウェブサイト
  • 食堂・売店 利用予定なし/0


The inflaton inevitably couples to all non-conformally coupled matters to gravity, through an oscillation in the Hubble parameter or the cosmic scale factor. This oscillation leads to particle production during the inflaton oscillation regime. In this talk, I first apply the analysis of scalar particle production to the case of minimally-coupled inflaton to gravity, and then extend the analysis to non-minimally coupled case, in which the Hubble parameter oscillates more violently. I also show the analysis of the graviton production by the inflaton in both minimal & non-minimal case.

Reference : 1. Gravitational Effects on Inflaton Decay, Yohei Ema, Ryusuke Jinno, Kyohei Mukaida, Kazunori Nakayama arXiv:1502:02475 2. Yohei Ema, Ryusuke Jinno, Kyohei Mukaida, Kazunori Nakayama, to appear