期刊
PHYSICAL REVIEW LETTERS
卷 120, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.031301
关键词
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资金
- National Natural Science Foundation of China [11690021, 11690022, 11575272, 11335012, 11375247, 11435006]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB23030100]
- Key Research Program of Frontier Sciences, CAS
- DOE [DE-SC0017647]
- Kellett Award of the University of Wisconsin
We study the production of gravitational waves during oscillations of the inflaton around the minimum of a cuspy potential after inflation. We find that a cusp in the potential can trigger copious oscillon formation, which sources a characteristic energy spectrum of gravitational waves with double peaks. The discovery of such a double-peak spectrum could test the underlying inflationary physics.
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