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キーワード:
High Energy Physics - Theory, hep-th
要旨:
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.
