Usefulness classes of travelling entangled channels in noninertial   frames
  The dynamics of a general two qubits system in noninetrial frame is investigated analytically, where it is assumed that both of its subsystems are differently accelerated. Two classes of initial travelling states are considered:self transposed and a generic pure states. The entanglement contained in all possible generated entangled channels between the qubits and their Anti-qubits is quantified. The usefulness of the travelling channels as quantum channels to perform quantum teleportation is investigated. For the self transposed classes, we show that the generalized Werner state is the most robust class. We show that starting from a class of pure state, one can generate entangled channels more robust than self transposed classes. 
Nasser Metwally
quant-ph