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What is the ontological status of Faddeev Popov ghosts?

We all know Faddeev-Popov ghosts are needed in manifestly Lorentz covariant nonabelian quantum gauge theories. We also all know they decouple from the rest of matter asymptotically, although they ...

asked Jul 5 '12 at 9:22

Gasp
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What is the ontological status of Faddeev Popov ghosts?

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