The Exceptional Sigma Model

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14 Citations (Scopus)


We detail the construction of the exceptional sigma model, which describes a string propagating in the "extended spacetime" of exceptional field theory. This is to U-duality as the doubled sigma model is to T-duality. Symmetry specifies the Weyl-invariant Lagrangian uniquely and we show how it reduces to the correct 10-dimensional string Lagrangians. We also consider the inclusion of a Fradkin-Tseytlin (or generalised dilaton) coupling as well as a reformulation with dynamical tension.
Original languageEnglish
Article number64
Number of pages55
JournalThe Journal of high energy physics
Issue number4
Publication statusPublished - 11 Apr 2018

Bibliographical note

38 pages + appendices v2: minor changes, published version


  • hep-th
  • M-Theory
  • String Duality

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