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What is QED: Gauge Invariant Interacting Theory about?
This document provides an overview of quantum electrodynamics (QED). It discusses how QED quantizes the interacting theory of electrons and photons in a way that preserves gauge invariance. QED has been extremely successful, with theoretical results agreeing very well with experiment. The document reviews different approaches to quantizing the free electromagnetic field and outlines how the classical theory of electromagnetism for point particles motivates a gauge-invariant formulation of the interacting th
- Author
- Pedro Simoes
- Language
- EN