On The Warped Heterotic Axion
On The Warped Heterotic Axion
复制标题
论扭曲的异质轴子
DOI：
10.1088/1126-6708/2008/06/056
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
R. Gwyn
中科院分区：
文献类型：
--
作者：
Keshav Dasgupta;H. Firouzjahi;R. Gwyn
我们研究了扭曲杂种优势背景下的轴子。结果表明，轴子衰变常数f_a对喉道弯曲质量尺度敏感。作为一个显式模型，我们在杂化弦理论中构造了一个新的AdS-like几何。我们证明了在这种背景下，f_a是由紧化中最长喉道的质量标度给出的。在10^9- 10^12 GeV的要求范围内获得f_a的问题被简化为在具有上述范围内的翘曲质量标度的杂化弦理论紧化中构造一个喉道。这为在杂合弦理论中实现轴子提供了一种自然的机制。
We study the axion in a warped heterotic background. It is shown that the axion decay constant, f_a, is sensitive to the warped mass scale of the throat. As an explicit model, we construct a novel AdS-like geometry in heterotic string theory. We demonstrate that in this background f_a is given by the mass scale of the longest throat in the compactification. The question of obtaining f_a within the required bound 10^9--10^12 GeV is reduced to the construction of a throat inside the heterotic string theory compactification with warped mass scale in the above range. This provides a natural mechanism for realising the axion in heterotic string theory.