期刊
PHYSICAL REVIEW D
卷 98, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.98.061301
关键词
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资金
- Department of Energy (DOE) [DE-SC0011941]
- National Science Foundation (NSF) [PHY-1214302]
- James Arthur Fellowship
- U.S. Department of Energy (DOE) [DE-SC0011941] Funding Source: U.S. Department of Energy (DOE)
We describe a systematic framework for periodic potentials of arbitrary dimension, such as those governing multiple axions. A novel type of alignment renders even complex theories analytically tractable. Theories with similar to 100 axions and random parameters have an exponential number of metastable vacua. Decay from a metastable minimum can occur via a thin-wall instanton and allows for a sufficient period of slow-roll inflation that ends in a vacuum containing axion dark matter and a cosmological constant, both consistent with current observations. Hence, this model can reproduce many macroscopic features of our Universe without tuned parameters.
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