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Results tagged with ghosts
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user 92058
Ghosts are unphysical states that arise when quantizing gauge theories. Do not use this tag for 'ghosts' in the paranormal sense.
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Why do negative norm states break unitarity?
But this is just a calculational trick to see the anomaly - the anomaly is real, the ghosts aren't. … This is another way to see the anomaly that doesn't require any mention of ghosts. …
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