We discuss the possible sources of dark matter axions in the early universe. In the standard thermal scenario, an axion string network forms at the Peccei-Quinn phase transition T~fa and then radiatively decays into a cosmological background of axions; to be the dark matter, these axions must have a
On the Crucial Stages in the Origin of Animate Matter
โ Scribed by Shneior Lifson
- Publisher
- Springer
- Year
- 1997
- Tongue
- English
- Weight
- 120 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0022-2844
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