Novel method for identifying the heaviest QED atom

Jing-Hang Fu, Sen Jia, Xing-Yu Zhou +3

The bound state of a $\ddot{I}{„}^{+}\ddot{I}{„}^{-}$ pair by the electromagnetic force is the heaviest and smallest QED atom. Since the discovery of the two lightest QED atoms more than 60 years ago, n…