论文标题
爱丽丝和鲍勃在各向异性扩大时段
Alice and Bob in an anisotropic expanding spacetime
论文作者
论文摘要
我们研究了两个各向异性扩大时空中两个共同观察者爱丽丝和鲍勃之间的量子传送过程。在此模型中，我们计算了传送的保真度，并注意到其光谱的振荡是方位角的函数。我们发现，对于极角$ ϕ = \fracπ{2} $和方位角$θ\ neq \ neq \ frac {3π} {4} {4} +nπ$，$ n = 0、1、2，... $ frose的效率降低，即，富裕程度较小。此外，还表明，各向异性对忠诚度的影响在平滑膨胀和无质量颗粒的极限中变得更有意义。另一方面，曲率耦合的影响在快速扩展的状态下变得明显（$ \fracρΩ\ gg 1 $）。
We investigate a quantum teleportation process between two comoving observers Alice and Bob in an anisotropic expanding spacetime. In this model, we calculate the fidelity of teleportation and we noted an oscillation of its spectrum as a function of the azimuthal angle. We found that for the polar angle $ϕ= \fracπ{2}$ and the azimuthal angle $θ\neq \frac{3π}{4} + nπ$ with $n = 0, 1, 2, ...$ the efficiency of the process decreases, i.e., the fidelity is less than one. In addition, it is shown that the anisotropic effects on the fidelity becomes more significative in the regime of smooth expansion and the limit of massless particles. On the other hand, the influence of curvature coupling becomes noticeable in the regime of fast expansion (values of $\fracρω \gg 1$).
