Speaker
Description
We consider scalar field dark matter model with a dilaton-like interaction with the electromagnetic field. If the mass of this scalar field falls within the range of hundreds of MHz, it may be detected using cavity resonator techniques similar to those used in the search of the axion dark matter in the ADMX and ORGAN experiments. We show that existing cavity resonators employed in experiments like ADMX have a low but nonvanishing sensitivity to the scalar-photon coupling. As a result, by repurposing the results of the ADMX experiment, we find new limits on the scalar-photon coupling constant in the frequency band from 630 MHz to 1 GHz. We propose new cavity resonators with enhanced sensitivity and a novel capacitor-based experiment featuring broadband detection possibilities of the scalar field dark matter.
