Quantum electrodynamics

1948

Quantum electrodynamics

The book of science

Tom Sharp

Hans Bethe, Julian Schwinger, Shin'ichirō Tomonaga, Freeman Dyson, Richard Feynman quantum mechanics

Quantum electrodynamics

Superpositions

Virtual

A Feynman diagram does not show how a particle moves from one point to another; the particle’s path, speed, dimensionality, and nature are still mysteries, although quantum electrodynamic theory describes the probabilities that it undergoes events, such as when an electron absorbs or emits a photon, or when a quark-antiquark pair radiates a gluon. Quantum electrodynamics is a part of quantum field theory; a field is a function that assigns a value for each point in a space (of some kind).

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