Abstract
In this paper, we investigate the decoherence of two-qubit state under amplitude-damping channel in non-inertial frames and find some results differ from those of previous study. In case of only Bob’s qubit undergoing decoherence, the entanglement sudden death (ESD) does not appear for any acceleration parameter. By using three-tangle τ we also investigate decoherence of GHZ state under amplitude-damping channel in non-inertial frames. In this case we find that the ESD never appears even though all qubits are under amplitude-damping channel. Our work will further enrich the results of decoherence of multipartite entanglement in non-inertial frames.
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