The Ferroaxionic Force and the Piezoaxionic Effect (Online)
Tue, Nov. 07th 2023, 14:00-15:00
Salle Claude Itzykson, Bât. 774, Orme des Merisiers
In this talk, I will discuss two new and closely related experimental observables to search for the QCD axion. These observables are based on classes of materials that break parity symmetry spontaneously, enabling sensitivity to the axion’s fundamental, model independent coupling to gluons. The first of these, which we call the "Ferroaxionic Force", demonstrates how we can use ferroelectric crystals to generate virtual QCD axions in the laboratory, constituting a new force. These axion-mediated forces could be detected via nuclear magnetic resonance techniques, spanning a mass range for the axion from 10^-5 eV to 10^-2 eV. The second, the "Piezoaxionic Effect" describes how QCD axion dark matter can generate oscillating vibrational modes in a piezoelectric crystal. These modes could be read out electrically via the piezoelectric effect, probing a mass range from 10^-11 eV to 10^-7 eV. I will give examples of experimental setups for each of these new observables based on established technology, and discuss their potential reach and future challenges.