PostSchool of Particles and Accelerators

School of Particles and Accelerators Wednesday Weekly Seminar – Virtual Format Date: Wednesday, Apr 23, 2025 / چهارشنبه، 3 اردیبهشت 1404 Time: 05:00 PM - 06:00 PM (Tehran time) Speaker: Dr. Naomi Gendler   Affiliation: Physics Department, Harvard University Title: Axions in the Dark Dimension   Title in Persian: اکسیون ها در بعد تاریک Abstract: 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.   Indico Link: https://indico.hep.ipm.ir/e/n.gendler Link to Join Virtually: https://www.skyroom.online/ch/ipm-particles/weekly-seminar