Low energy effective action in N=2 Yang-Mills as an integrated anomaly

Abstract : Based on chiral ring relations and anomalies, as described by Cachazo, Douglas, Seiberg and Witten, we argue that the holomorphic effective action in N=2 Yang-Mills theory can be understood as an integrated U(1) anomaly from a purely field theory point of view. In particular, we show that the periods of the Riemann surface arising from the generalized Konishi anomaly can be given a physical interpretation without referring to special geometry. We also discuss consequences for the multi-instanton calculus in N=2 Yang-Mills theory.
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Marc Magro, Ivo Sachs. Low energy effective action in N=2 Yang-Mills as an integrated anomaly. Journal of High Energy Physics, Springer, 2005, pp.006. ⟨10.1088/1126-6708/2005/08/006⟩. ⟨ensl-00180196⟩

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