# What is the difference between QFT and elementary particle physics?

I'm a little unclear as to how QFT differs from Elementary particle physics. They both use pictorials of Feynman graphs, is it that Elementary particle physics assumes the point particle perspective, while QFT treats them as fields?

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Concerning this answer to another question. You appear to have duplicate accounts. There is a help center page about that. –  dmckee Feb 10 '14 at 13:23

Since we are working with fields, you not constricted to a fixed particle number as in Quantum Mechanics. This is very useful since due to $E=mc^2$, particles constantly appear and disappear in the real world.