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abstraction > hypothesis > theory > physics theory > quantum mechanics > quantum field theory > gauge theory > quantum electrodynamics

quantum electrodynamics comparison table

Subject	has definition	has exchange quantum	has acronym	is a kind of	has gauge symmetry	is an instance of
gauge theory				quantum field theory
quantum electrodynamics	Gauge theory describing the interactions between electrically charged particles through the electro-magnetic field.	photon	QED		U(1) (Abelian group)	gauge theory

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