期刊
EUROPEAN PHYSICAL JOURNAL C
卷 79, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-019-6756-x
关键词
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资金
- Science and Technology Facilities Council [ST/P000819/1]
- National Council for Scientific and Technological Development (CNPq - Brazil)
- STFC [ST/P000819/1] Funding Source: UKRI
It has been shown that the spectrum of quantum gravity contains at least two new modes in addition to the massless graviton: a massive spin-0 and a massive spin-2. We calculate their power spectrum during inflation and we argue that they could leave an imprint in the cosmic microwave background should their masses be below the inflationary scale.
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