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arXiv · 1906.11851

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

Sang Hui Im·Hans Peter Nilles·Marek Olechowski
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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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Sang Hui Im, Hans Peter Nilles, Marek Olechowski. 2019-10-28. Axion clockworks from heterotic M-theory: the QCD-axion and its ultra-light companion. https://doi.org/10.1007/jhep10(2019)159

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