Extracting Hidden-Photon Dark Matter From an LC-Circuit
  We point out that a cold dark matter condensate made of gauge bosons from an extra hidden U(1) sector - dubbed hidden- photons - can create a small, oscillating electric density current. Thus, they could also be searched for in the recently proposed LC-circuit setup conceived for axion cold dark matter search by Sikivie, Sullivan and Tanner. We estimate the sensitivity of this setup for hidden-photon cold dark matter and we find it could cover a sizable, so far unexplored parameter space. 
Paola Arias, Ariel Arza, Babette D\"obrich, Jorge Gamboa, Fernando   Mendez
hep-ph hep-ex