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arXiv · 2412.17894

Anomaly Inflow and Gauge Group Topology in the 10d Sugimoto String Theory

Vittorio Larotonda·Ling Lin
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Abstract

We revisit the chiral spectra on charged 1- and 5-branes in the 10d non-supersymmetric $\mathfrak{sp}(16)$ string theory (also known as the Sugimoto model), and verify that they consistently cancel the anomaly inflow induced by a Green--Schwarz mechanism in the bulk. By analyzing the $\mathfrak{sp}(16)$ representations arising from quantizing the fermion zero modes on these branes as well as uncharged 4-branes, we find compelling evidence that the global structure of the gauge group is $Sp(16)/\mathbb{Z}_2$. We further comment on a possible duality to non-supersymmetric heterotic strings, and explore bottom-up anomaly inflow constraints for 10d effective $Sp(16)/\mathbb{Z}_2$ gauge theories coupled to gravity.

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Vittorio Larotonda, Ling Lin. 2024-12-23. Anomaly Inflow and Gauge Group Topology in the 10d Sugimoto String Theory. https://arxiv.org/abs/2412.17894

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