标题： 树级量子电动力学过程中的完备互补关系 显示英文标题

标题： Complete complementarity relations in tree level QED processes

摘要： 我们利用完全互补关系来全面表征Bhabha散射过程$(e^-e^+ \rightarrow e^-e^+)$在树级别下的量子性各个方面。 为了说明目的，我们考虑三种不同的情况：第一种情况中，初始电子A和正电子B由可分解态描述；第二种情况下，入射粒子由局部叠加态描述，总态是可分解的；最后，我们考虑更一般的初始态，在这种情况下，A和B可以处于纠缠态。 我们发现，QED散射过程以非平凡的方式在粒子之间生成和分布量子信息，CCR对于初始态和最终态都成立。 显示英文摘要

摘要： We exploit complete complementarity relations to fully characterize various aspects of quantumness in a Bhabha scattering process $(e^-e^+ \rightarrow e^-e^+)$ at tree level. For illustrative purposes, we consider three different situations: in the first one the initial electron A and positron B are described by a factorized state; in the second one, the incoming particles are described by local superpositions and the total state is factorized; finally, we consider the more general initial state in which A and B can be entangled. We find that the QED scattering process generates and distributes quantum information in a non-trivial way among the particles, with CCR being fulfilled both for initial and final states.