论文标题
在宇宙学的时空时期的费尔米式纠缠的一些措施
Some measures for fermionic entanglement in the cosmological de Sitter spacetime
论文作者
论文摘要
我们研究了两种量子相关性和纠缠的量度，即违反贝尔·梅尔明 - 克莱斯科（Bell-Mermin-Klyshko）的不平等和量子不和谐的措施，对于宇宙学界面的dirac fermions for dimension四。 BMK违规的重点是两个和四种模式挤压状态的真空，并且显示随着模式的数量增加。对于量子不一致，我们研究了一个最大的纠结内部态状态。讨论了在标量和费米金场理论的背景下，定性相似性以及我们的结果与DE Sitter不同坐标的差异。
We investigate two measures of quantum correlations and entanglement, namely the violation of the Bell-Mermin-Klyshko inequalities and the quantum discord, for Dirac fermions in the cosmological de Sitter background of dimension four. The BMK violation is focussed on the vacuum for two and four mode squeezed states and it is shown to increase with the number of modes. For the quantum discord, we investigate a maximally entangled in-vacuum state. Qualitative similarities as well as differences of our results with that of different coordinatisations of de Sitter in the context of scalar and fermionic field theory is discussed.
