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arXiv 0809.1206astro-phhep-phnucl-th
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超越视界的暴胀公理宇宙学

Inflationary Axion Cosmology Beyond Our Horizon

David B. Kaplan, Ann E. Nelson

摘要:

在具有大的轴子衰变常数的轴子暗物质理论中,CMB中的温度变化对初始轴子场的扰动极其敏感,这使得人们可以对膨胀的总量设定一个下限。最严格的边界来自轴子弦,对于轴子衰变常数f=10^17 GeV,目前可以在6 × 10^16光年的距离上观察到,这几乎是我们视界的1000万倍。

英文摘要:

In theories of axion dark matter with large axion decay constant, temperature variations in the CMB are extremely sensitive to perturbations in the initial axion field, allowing one to place a lower bound on the total amount of inflation. The most stringent bound comes from axion strings, which for axion decay constant f=10^17 GeV would currently be observable at a distance of 6 x 10^16 light-years, nearly ten million times as far away as our horizon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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