Wednesday weekly meeting

Wednesday 23 Apr 2025, 16:00 → 17:00 Asia/Tehran

Gholamhossein Haghighat (IPM)

General weekly meeting of the school of particles and accelerators (virtual format)

• Link to join virtually: https://www.skyroom.online/ch/ipm-particles/weekly-seminar

1 Axions in the Dark Dimension

The dark dimension scenario, which is motivated from Swampland principles and predicts a single micron scale extra dimension, suggests a consistent framework for the dark sector of the universe. We consider the implications of this scenario for the QCD axion. We find that in the scenario in which the axion is localized on the standard model brane (which we argue is natural), a combination of theoretical (being bounded by the 5D Planck mass) and observational constraints forces it to have decay constant in a narrow range f~10^9 −10^10 GeV.

Speaker: Dr Naomi Gendler (Harvard University)