| Resumen |
In this work we analyze the characteristics of quantum entanglement of the Dirac field in noninertial reference frames in the context of a new type pseudo-pure state, which is composed of the Bell states. This will help us to understand the relationship between the relativity and quantum information theory. Some states will be changed from entangled states into separable ones around the critical value F = 1/4, but there is no such a critical value for the variable y related to acceleration a. We find that the negativity NABI(ABITA) increases with F but decreases with the variable y, while the variation of the negativity NBIBII(BIBIITB is opposite to that of the negativity NABI(ATA). We also study the von Neumann entropies S(AB(I)) and S(BIBII). We find that the S(AB(I)) increases with variable y but S(BIBII ) is independent of it. However, both S(AB(I)) and S(BIBII ) first decreases with F and then increases with it. The concurrences C(AB(I)) and C(BIBII) are also discussed. We find that the former decreases with y while the latter increases with y but both of them first increase with F and then decrease with it. |
