Quantum Electrodynamics has Zero Radius of Convergence Summarized from Toichiro Kinoshita Quantum Electrodynamics is the best tested theory on earth (perhaps in the universe, depending on how many aliens there are). The practitioners (starting with Schwinger and Feynman, and now being led by Tom Kinoshita here at Cornell) typically calculate ``g-2'' for the electron. They've calculated it as a ...