 Right-acting BRST differential (source code)

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= Right-acting BRST differential
{title2=$Q_R$}

A <right-acting BRST differential> obeys the right <graded Leibniz rule>. This convention permits $Q\phi=[c,\phi]$ together with $Qc=-[c,c]/2$. Using a left <graded Leibniz rule> with those same two signs does not give a <nilpotent operator>; one of the signs must change.

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