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1. • CommentRowNumber1.
   • CommentAuthorperezl.alonso
   • CommentTimeDec 4th 2022
   • PermaLink
   Author: perezl.alonso
   Format: MarkdownItexOne can use Cartan geometry to provide the so-called first-order formulation of gravity. The discussion in https://math.ucr.edu/home/baez/octonions/node19.html makes clear that one can realize E8 as the symmetry group of some space involving the octonions. Is there a meaningful application of these two facts to a formulation of the heterotic string in terms of octonions? John Baez considered this idea (as seen in https://golem.ph.utexas.edu/category/2014/11/integral_octonions_part_8.html) but I was not able to find a concretization of this.

   One can use Cartan geometry to provide the so-called first-order formulation of gravity. The discussion in https://math.ucr.edu/home/baez/octonions/node19.html makes clear that one can realize E8 as the symmetry group of some space involving the octonions. Is there a meaningful application of these two facts to a formulation of the heterotic string in terms of octonions? John Baez considered this idea (as seen in https://golem.ph.utexas.edu/category/2014/11/integral_octonions_part_8.html) but I was not able to find a concretization of this.

2. • CommentRowNumber2.
   • CommentAuthorUrs
   • CommentTimeDec 5th 2022
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   Author: Urs
   Format: MarkdownItexSomething at least close to this is the topic of [[exceptional generalized geometry]].

   Something at least close to this is the topic of exceptional generalized geometry.