Stora–Zumino chain of descent equations
This chapter shows how the singlet anomaly in 2n dimensions determines the non-Abelian anomaly in (2n - 2) dimensions via a set of equations. These are part of a whole chain of equations, which descend in their form degree, thus called the Stora–Zumino chain of descent equations. This chain is derived in pure mathematical grounds — algebra and differential geometry — and its meaning is physics is discussed. The chapter offers the topological aspect of a chain, described by an index theorem.
Keywords: singlet anomaly, non-Abelian anomaly, Stora–Zumino chain, descent equations
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