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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| j.physletb.2017.12.014.pdf | 420.39 kB | Adobe PDF | 見る/開く |
| タイトル: | Does the detection of primordial gravitational waves exclude low energy inflation? |
| 著者: | Fujita, Tomohiro Namba, Ryo Tada, Yuichiro |
| キーワード: | Nuclear and High Energy Physics |
| 発行日: | 10-Mar-2018 |
| 出版者: | Elsevier BV |
| 誌名: | Physics Letters B |
| 巻: | 778 |
| 開始ページ: | 17 |
| 終了ページ: | 21 |
| 抄録: | We show that a detectable tensor-to-scalar ratio (r ≥ 10[−3]) on the CMB scale can be generated even during extremely low energy inflation which saturates the BBN bound ρinf ≈ (30 MeV)[4]. The source of the gravitational waves is not quantum fluctuations of graviton but those of SU(2) gauge fields, energetically supported by coupled axion fields. The curvature perturbation, the backreaction effect and the validity of perturbative treatment are carefully checked. Our result indicates that measuring r alone does not immediately fix the inflationary energy scale. |
| 著作権等: | © 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. |
| URI: | http://hdl.handle.net/2433/230370 |
| DOI(出版社版): | 10.1016/j.physletb.2017.12.014 |
| 出現コレクション: | 学術雑誌掲載論文等 |
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