Redistribution of particle and anti-particle entanglement in   non-inertial frames
  We analyse the entanglement tradeoff between particle and anti-particle modes of a Dirac field from the perspective of inertial and uniformly accelerated observers. Our results show that a redistribution of entanglement between particle and anti-particle modes plays a key role in the survival of fermionic field entanglement in the infinite acceleration limit. 
E. Martin-Martinez and I. Fuentes
quant-ph gr-qc