论文标题
de Sitter Universe扩展参数的黑盒估计
Black-box estimation of expanding parameter for de Sitter universe
论文作者
论文摘要
我们研究了de Sitter空间的扩展参数的黑框参数估计和高斯干涉能力的动力学。我们发现，分开的开放图表之间的状态可以用作黑盒量子计量学的探针状态。这是非平凡的，因为开放图是因果关系脱节的，并且根据一般相对论无法在它们之间交换经典信息。结果表明，标量场的质量会显着影响DE Sitter空间中黑框参数估计的准确性，这与质量参数不影响估计精度的平面空间案例完全不同。当最初不相关的开放图表之间没有纠缠时，发现量子不符合的量子不符合量的关键资源。这证明，不同的开放图表之间的探针状态在不同的开放图表之间的作用是完全不同的，因为DE Sitter空间的弯曲效应损害了最初相关的探测状态的量子量，而该量子为探测状态而产生了量子的量子，而该量子是为量子提供了量子的量子。
We study the black-box parameter estimation of expanding parameters and the dynamics of Gaussian interferometric power for the de Sitter space. We find that the state between separated open charts can be employed as probe state for the black-box quantum metrology. This is nontrivial because the open charts are causally disconnected and classical information can not be exchanged between them according to the general relativity. It is shown that the mass of the scalar field remarkably affects the accuracy of the black-box parameter estimation in the de Sitter space, which is quite different from the flat space case where the mass parameter does not influence the precision of estimation. Quantum discord is found to be a key resource for the estimation of the expanding parameter when there is no entanglement between the initially uncorrelated open charts.It is demonstrated that the role of the probe state between different open charts is quite distinct because curvature effect of the de sitter space damages quantum resources for the initially correlated probe states, while it generates quantum resources for the initially uncorrelated probe states.
