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Ghost (physics)

In quantum field theory, a ghost, ghost field, ghost particle, or gauge ghost refers to an unphysical state in a gauge theory. These ghosts are introduced to maintain gauge invariance in theories where the local field components exceeds the number of physical degrees of freedom. Ghosts ensure mathematical consistency in gauge theories.

Art, Good ghosts & Bad ghosts

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Good ghosts

Bad ghosts

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Ghost (physics)

Nodes44
Edges43
Triples0
Avg. degree1.95
Density0.045455
Components1

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Important terminology

ghosts ghost gauge theory theories field good fields freedom faddeev popov introduced particles like bad bosons quantum unphysical degrees states

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SubjectPredicateObjectConfidenceSrc

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