Dynamical axion misalignment with small instantons
Abstract We present a new mechanism to relax the initial misalignment angle of the QCD axion and raise the cosmological bound on the axion decay constant. The QCD axion receives a contribution from small UV instantons during inflation, which raises its mass to the inflationary Hubble scale. This mak...
| Główni autorzy: | , |
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| Format: | Artykuł |
| Język: | English |
| Wydane: |
SpringerOpen
2019-12-01
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| Seria: | Journal of High Energy Physics |
| Hasła przedmiotowe: | |
| Dostęp online: | https://doi.org/10.1007/JHEP12(2019)161 |