Note on Anomaly Cancellation on SO(32) heterotic 5-brane
Harunobu Imazato, Shun'ya Mizoguchi, Masaya Yata
TL;DR
This paper demonstrates that anomalies near an SO(32) heterotic 5-brane cancel via inflow from the bulk using the Green-Schwarz mechanism, paralleling the E8 x E8 case, and compares with previous small-instanton analysis.
Contribution
It extends anomaly cancellation analysis to SO(32) heterotic 5-branes, showing the Green-Schwarz mechanism's role similar to E8 x E8 branes.
Findings
Anomalies cancel via inflow from the bulk.
Green-Schwarz mechanism effectively cancels localized anomalies.
Results align with previous small-instanton analysis.
Abstract
We show that the gauge, gravitational (tangent-bundle) and their mixed anomalies arising from the localized modes near a 5-brane in the SO(32) heterotic string theory cancel with the anomaly inflow from the bulk with the use of the Green-Schwarz mechanism on the brane, similarly to the E_8 x E_8 5-brane case. We also compare our result with Mourad's analysis performed in the small-instanton limit.
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