Non-minimal electrodynamics and resonance interactions in relativistic   plasma
  A three-parameter toy-model, which describes a non-minimal coupling of gravity field with electromagnetic field of a relativistic two-component electrically neutral plasma, is discussed. Resonance interactions between particles and transversal waves in plasma are shown to take place due to the curvature coupling effect. 
A.B. Balakin and R.K. Muharlyamov