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Results tagged with quantum-electrodynamics
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user 8252
Quantum electrodynamics (QED) is the quantum field theory believed to describe electromagnetic interaction. It is the simplest example of a quantum gauge theory, where the gauge group is abelian, U(1).
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Electron-Positron annihilation Feynman Diagram
It is more than curious that to preserve O(3,1) symmetry in the Maxwell equations both charge conjugation and time reversal must both occur. In that sense the Feynman diagram is not a mere visual aid, …
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