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Type II strings are Exceptional

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arxiv 1712.07115 v2 pith:M3WQDNPN submitted 2017-12-19 hep-th

classification hep-th
keywords actionexceptionalformtypebackgroundfieldsmodelsigma
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abstract

We construct the exceptional sigma model: a two-dimensional sigma model coupled to a supergravity background in a manifestly (formally) $E_{D(D)}$-covariant manner. This formulation of the background is provided by Exceptional Field Theory (EFT), which unites the metric and form fields of supergravity in $E_{D(D)}$ multiplets before compactification. The realisation of the local symmetries of EFT on the worldsheet uniquely fixes the Weyl-invariant Lagrangian and allows us to relate our action to the usual type IIA fundamental string action and a form of the type IIB $(m,n)$ action. This uniqueness "predicts" the correct form of the couplings to gauge fields in both Neveu-Schwarz and Ramond sectors, without invoking supersymmetry.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Exotic branes and mixed-symmetry potentials II: Duality rules and exceptional $p$-form gauge fields

    hep-th 2019-09 accept novelty 7.0 of 10

    Mixed-symmetry potentials such as the dual graviton are embedded into exceptional field theory's p-form multiplets, with T- and S-duality rules derived for the E8 case.

  2. Duality-covariant particles and exotic branes

    hep-th 2026-06 unverdicted novelty 6.0 of 10

    Proposes enlarged worldline models with coadjoint orbit terms and generalized worldvolume theories for exotic branes that make E8 duality covariance manifest in a Hamiltonian formulation.

  3. Gauss law constraint in A-theory branes

    hep-th 2026-03 conditional novelty 6.0 of 10

    In D=3 and D=4 A-theory, all consistent solutions of the Gauss-law dimensional-reduction condition are strings, and the brane Virasoro algebra reduces to the ordinary string Virasoro algebra.

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