He is best known for his work on quantum electrodynamics (QED), in particular for developing a relativistically invariant perturbation theory, and for renormalizing QED to one loop order.
Schwinger is well known for his theories about quantum electrodynamics.
Schwinger is well known for his theories about quantum electrodynamics.
为该句子写一个更简单的版本: He is best known for his work on quantum electrodynamics (QED), in particular for developing a relativistically invariant perturbation theory, and for renormalizing QED to one loop order. 输出: