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arXiv 1608.08372hep-thhep-ph
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II型弦论中特殊点处的轴子衰变常数

Axion decay constants at special points in type II string theory

Masaki Honda, Akane Oikawa, Hajime Otsuka

摘要:

在卡-丘流形上的第二类弦论框架下,我们提出了从弦标度中解开闭弦轴子衰变常数的机制。我们发现,在模空间的某些特殊点上产生的预势的量子和几何修正加宽了轴子衰变常数的窗口。特别是,在小的复杂结构点周围,轴子衰变常数变得明显低于弦标度。我们还讨论了模稳定导致的现象有吸引力的低尺度轴子衰变常数。

英文摘要:

We propose the mechanism to disentangle the decay constant of closed string axion from the string scale in the framework of type II string theory on Calabi-Yau manifold. We find that the quantum and geometrical corrections in the prepotential that arise at some special points in the moduli space widen the window of axion decay constant. In particular, around the small complex structure points, the axion decay constant becomes significantly lower than the string scale. We also discuss the moduli stabilization leading to the phenomenologically attractive low-scale axion decay constant.

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