The string little algebra

Keith Glennon, Peter West*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We consider the string, like point particles and branes, to be an irreducible representation of the semi-direct product of the Cartan involution invariant subalgebra of E11 and its vector representation. We show that the subalgebra that preserves the string charges, the string little algebra, is essentially the Borel subalgebra of E9. We also show that the known string physical states carry a representation of parts of this algebra.

Original languageEnglish
Article number2250051
JournalInternational Journal of Modern Physics A
Issue number10
Publication statusPublished - 10 Apr 2022


  • E11
  • string theory
  • Supersymmetry


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