title: How the Relativistic Motion Affect Quantum Fisher Information and Bell Non-locality for Multipartite state.
abstract: In this work, the quantum fisher information (QFI) and Bell non-locality of a multipartite fermionic system are investigated. Unlike the currently existing research of QFI, we focus our attention on the differences between quantum fisher information and Bell non-locality under the relativistic framework. The results show that although the relativistic motion affects the strength of the non-locality, it does not change the physical structure of non-locality. However, unlike the case of non-locality, the relativistic motion not only influence the precision of the QFI Fϕbut also broke the symmetry of the function Fϕ. The results also show that for a special multipartite system, , the number of particles of a initial state do not affect the Fθ. Furthermore, we also find that Fθis completely unaffected in non-inertial frame if there are inertial observers. Finally, in view of the decay behavior of QFI and non-locality under the non-inertial frame, we proposed a effective scheme to battle against Unruh effect.
authors.affiliation: School of Physics and Material Science, Anhui University, Hefei 230601, P. R. China.
authors.forename: Chun Yu
authors.initials: CY
authors.lastname: Huang
authors.affiliation: School of Physics and Material Science, Anhui University, Hefei 230601, P. R. China.
authors.forename: Wenchao
authors.initials: W
authors.lastname: Ma
authors.affiliation: School of Physics and Material Science, Anhui University, Hefei 230601, P. R. China.
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.affiliation: School of Physics and Material Science, Anhui University, Hefei 230601, P. R. China.
authors.forename: Liu
authors.initials: L
authors.lastname: Ye