Particle and anti-particle bosonic entanglement in non-inertial frames
  We analyse the entanglement tradeoff between particle and anti-particle modes of a charged bosonic field between inertial and uniformly accelerated observers. In contrast with previous results for fermionic fields, we find that the entanglement redistribution between particle and antiparticle modes does not prevent the entanglement from vanishing in the infinite acceleration limit. 
David Edward Bruschi, Andrzej Dragan, Ivette Fuentes and Jorma Louko
quant-ph gr-qc