Gravitational effects on inflaton decay

 
カテゴリ
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
講演者神野隆介 氏 (東京大学)
言語英語/English
連絡先山本　恵、yamakei-AT-post.kek.jp
ウェブサイト
食堂・売店利用予定なし／0

概要

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

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