They are going to accompany particles surely as every quadratic equation has two solutions.

他们是成对的粒子,正如每个二次方程都有两个根一样

耶鲁公开课 - 基础物理课程节选

He was trying to describe electrons, but the theory said there are two roots in the quadratic equation and the second root is mathematically as interesting as the first one.

他当时只是想去描述电子,但是数学理论告诉我们,二次方程有两个根,而第二个根在数学上和第一个根一样有趣

耶鲁公开课 - 基础物理课程节选