2) quantum electrodynamics. The Columbia Encyclopedia, Sixth Edition. 2001 ...quantum electrodynamics, (QED), quantum field theory that describes the properties of electromagnetic radiation and its interaction with electrically charged matter...

3) quantum field theory. The Columbia Encyclopedia, Sixth Edition. 2001 ...theory applied to the understanding of electromagnetism is called quantum electrodynamics (QED), and it has proved spectacularly successful in describing the interaction...

4) electroweak theory. The Columbia Encyclopedia, Sixth Edition. 2001 ...from efforts to produce a theory for the weak force analogous to quantum electrodynamics (QED), the quantum theory of the electromagnetic force. Although the weak...

5) quantum chromodynamics. The Columbia Encyclopedia, Sixth Edition. 2001 ...in Hamburg. QCD is nearly identical in mathematical structure to quantum electrodynamics (QED) and to the unified theory of weak and electromagnetic interactions...