A quintessential axion

A quintessential axion
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DOI:
10.1016/s0370-2693(02)03148-9
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发表时间:
2002-10
期刊:
影响因子:
4.4
通讯作者:
Jihn E. Kim;H. Nilles
Jihn E. Kim;H. Nilles
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Jihn E. Kim;H. Nilles

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弦理论中与模型无关的轴子有一个普朗克数量级的衰变常数。我们探索了隐藏扇区超引力击穿方案中的这一精华候选者(五重数)的性质。在允许一个合理的μ项的模型中,隐藏扇区动力学可能导致一个几乎平坦的势,该势对应于(0.003 eV)4的真空能量。一个额外的隐藏扇形伪标量(QCD轴子)提供了一个解决强CP问题的方案,它的性质使它成为宇宙冷暗物质的一个可接受的候选者。
The model independent axion of string theory has a decay constant of order of the Planck scale. We explore the properties of this quintessence candidate (quintaxion) in the scheme of hidden sector supergravity breakdown. In models allowing for a reasonable μ term, the hidden sector dynamics may lead to an almost flat potential responsible for the vacuum energy of (0.003 eV)4. A solution to the strong CP-problem is provided by an additional hidden sector pseudoscalar (QCD axion) with properties that make it an acceptable candidate for cold dark matter of the universe.