What is the difference between Quantum Physics, Quantum Theory, Quantum Mechanics, and Quantum Field Theory? Are they the same subject? I believe that they are not the same subject! Maybe there is not big difference between those subjects but I need to know what is main difference between those subjects and what is main intersection? Also I need to know which one is big subject relative to another?
Some of the relativistic quantum field theories would be QED, QCD, and the Standard Model.
protected by ACuriousMind Sep 3 '15 at 14:04
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