Mixing of photons with massive spin-two particles in a magnetic field
  We study the mixing of photons with hypothetical massive spin-two particles in the presence of a magnetic field. Mixing phenomena have been studied in the case of axion-like particles and strictly massless spin-two particles (gravitons) but not in this case. We find several interesting differences between them. 
Carla Biggio, Eduard Masso and Javier Redondo