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Axion clockworks from heterotic M-theory: the QCD-axion and its ultra-light companion

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arxiv 1906.11851 v2 pith:CAYQDZZY submitted 2019-06-27 hep-th hep-ph

Sang Hui Im , Hans Peter Nilles , Marek Olechowski This is my paper
classification hep-thhep-ph
keywords axionheteroticm-theoryqcd-axionultra-lightaccompaniedappliedaround
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

A previously discussed clockwork mechanism within heterotic M-theory is applied to its axion landscape. We identify a unique candidate for a QCD-axion with a decay constant in the preferred "axion window" around $10^{11}\,$GeV. It is accompanied by at least one ultra-light axion that couples predominantly to hidden sector gauge groups.

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