Abstract
We explicitly calculate the hexagon and heptagon (covariant) gauge anomaly including the precise numerical coefficients in type-I open superstring. The calculation is performed by using the Pauli-Villars regularization on the basis of the stringy Ward identity, which is an assumption weaker than the cancelled propagator argument. We show that the anomalies in the effective theory are realized as the zero slope limit (α′→0) of the string anomalies in a very non-trivial way in the present calculational scheme. This non-trivial realization in higher point (n≧8) anomalies is also discussed.
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Nagahama, Y. Relation between anomaly in type-I superstring and anomaly in its effective theory. Z. Phys. C - Particles and Fields 39, 47–56 (1988). https://doi.org/10.1007/BF01560389
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DOI: https://doi.org/10.1007/BF01560389