A ghost loop is a closed cycle of ghost propagators in a Feynman diagram. Its Grassmann statistics contribute an additional minus sign.

Ancestors (9)

  1. Faddeev-Popov ghost field
  2. Faddeev-Popov determinant
  3. Gauge fixing
  4. Gauge field
  5. Relativistic quantum field
  6. Quantum field theory
  7. Branch of physics
  8. Physics
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