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A rederivation of the conformal anomaly for spin-1/2
classification
✦ hep-th
keywords
anomalybeencalculationconformalspin-1althoughavailablecases
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We rederive the conformal anomaly for spin-1/2 fermions by a genuine Feynman graph calculation, which has not been available so far. Although our calculation merely confirms a result that has been known for a long time, the derivation is new, and thus furnishes a method to investigate more complicated cases (in particular concerning the significance of the quantum trace of the stress tensor in non-conformal theories) where there remain several outstanding and unresolved issues.
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