论文标题
不确定的因果秩序，具有固定的电子和正面的时间顺序
Indefinite causal order with fixed temporal order for electrons and positrons
论文作者
论文摘要
我们基于涉及负能量电子的Feynman的电子量子图片来分析相对论量子力学中的无限因果秩序。我们表明，范式量子开关的真正实现，但是在这里违反了某些因果不平等和固定的时间顺序，在极端的外部电磁场条件下，可以实现封闭的时间段曲线。
We provide an analysis of indefinite causal orders in relativistic quantum mechanics based on the electron-positron picture of Feynman involving negative energy electrons moving backward in time. We show that genuine implementations of the paradigmatic quantum switch, but here violating some causal inequalities and with a fixed temporal order, become possible in extreme external electromagnetic field conditions allowing the presence of closed time-like curves.
