- Open Access
Trivector symmetry of 11-dimensional supergravity
Phys. Rev. D 112, 046008 – Published 8 August, 2025
DOI: https://doi.org/10.1103/3tl6-c4b5
Abstract
Kaluza-Klein reductions of 11-dimensional supergravity lead to exceptional global symmetries in lower dimensions. Certain nongeometric elements of these symmetries, parametrized by a trivector , are not inherited from the higher-dimensional local symmetries, but represent instead a symmetry enhancement produced by the isometries of the background. Here, we demonstrate how to realize this enhancement in 11 dimensions, as a symmetry principle with constrained parameters. We show that transformations exchange the equations of motion of the metric and the three-form with their Bianchi identities, in a closed form, structuring them into trivector multiplets. Implementing this principle as an off shell symmetry of the theory requires the introduction of a hierarchy of dual fields, including a six-form and a dual graviton in the initial levels.
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