KEK素粒子原子核研究所・宇宙物理セミナー(浦川優子氏)

分類宇宙物理セミナー
開始2016/07/14(木)15:30
終了2016/07/14(木)16:30
会場研究本館1階会議室1
講演タイトルRecent progress on infrared issues in inflationary universe
講演者浦川 優子 氏 (名古屋大学)
言語英語/English
連絡先jwhite-AT-post.kek.jp
ウェブサイト
食堂・売店利用予定なし/0

概要

It has been known that a naive computation of loop corrections in inflationary universe gives rise to a pathologically large enhancement of the infrared (IR) contributions. In this talk, I will overview the recent progress on the IR issues during inflation. In particular, for the adiabatic and tensor perturbations, we can show that the IR pathology goes away, as far as we preserve the invariance under the large gauge transformations, which diverge at the spatial infinity. I also show a couple of other consequence of the invariance under the large gauge transformation; 1) the consistency relations, which connect (n+1)-point functions with one soft leg and n-point functions 2) the conservation of the curvature perturbation at large scales in the presence of the radiative corrections of heavy fields.

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