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Elliptic Blowup Equations for 6d SCFTs. III: E-strings, M-strings and Chains

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arxiv 1911.11724 v2 pith:YX3BJZ2Q submitted 2019-11-26 hep-th math-phmath.MP

Elliptic Blowup Equations for 6d SCFTs. III: E-strings, M-strings and Chains

classification hep-th math-phmath.MP
keywords blowupequationselliptice-stringsm-stringscalabi-yauchainsscfts
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We establish the elliptic blowup equations for E-strings and M-strings and solve elliptic genera and refined BPS invariants from them. Such elliptic blowup equations can be derived from a path integral interpretation. We provide toric hypersurface construction for the Calabi-Yau geometries of M-strings and those of E-strings with up to three mass parameters turned on, as well as an approach to derive the perturbative prepotential directly from the local description of the Calabi-Yau threefolds. We also demonstrate how to systematically obtain blowup equations for all rank one 5d SCFTs from E-string by blow-down operations. Finally, we present blowup equations for E-M and M string chains.

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  1. Generalised global symmetries in 5d $\mathcal{N}=1$ theories from the blow-up equations

    hep-th 2026-07 accept novelty 7.0

    Fractional exponents of the blow-up prefactor exp(-V_n) on 1-form backgrounds encode cubic and mixed anomalies of 5d N=1 SCFTs, deciding 2-groups versus mixed anomalies once the faithful UV symmetry is known from the index.