On the Relativistic Quantum Plasma
  Recently the interest in relativistic quantum plasma is increasing primarily to understand the fundamentals of the plasma behaviour and its properties. Mathematical models used to investigate these plasma are still need to be matured. Especially, the relativistic quantum electron-ion plasma are modeled using the Klein-Gordon equation and the Dirac equation for relativistic electrons. However, different properties of these plasma are investigated without anti-particles. We note that in order to preserve causality relativistic quantum plasma must contain anti-particles for relativistically dynamical components of the plasma. 
Rashid Ahmad, Ikramullah, Saqib Sharif, Shakir Husain, Fida Younus   Khattak
physics.plasm-ph