Entanglement amplification of fermionic systems in an accelerated frame

In this Brief Report we present an analysis deriving physical results in the entanglement amplification of fermonic systems in the relativistic regime, that is, beyond the single-mode approximation. This leads a recent work by Montero and Martin-Martinez [J. High Energy Phys. 07 (2011) 006] to a physical result, and confirms that the phenomenon of entanglement amplification can actually happen in the relativistic regime.