Division Algebras and Supersymmetry II

TL;DR

This paper constructs higher Lie superalgebras from division algebras, linking them to supersymmetry, string theory, and supergravity, and providing a mathematical framework for describing extended objects like strings and branes.

Contribution

It introduces a systematic method to derive Lie n-superalgebras from division algebras, extending supersymmetry algebra structures in various dimensions.

Findings

Constructed Lie 2-superalgebras in dimensions 3, 4, 6, 10.

Constructed Lie 3-superalgebras in dimensions 4, 5, 7, 11.

Connected higher gauge theories to supergravity fields.

Abstract

Starting from the four normed division algebras - the real numbers, complex numbers, quaternions and octonions - a systematic procedure gives a 3-cocycle on the Poincare Lie superalgebra in dimensions 3, 4, 6 and 10. A related procedure gives a 4-cocycle on the Poincare Lie superalgebra in dimensions 4, 5, 7 and 11. In general, an (n+1)-cocycle on a Lie superalgebra yields a "Lie n-superalgebra": that is, roughly speaking, an n-term chain complex equipped with a bracket satisfying the axioms of a Lie superalgebra up to chain homotopy. We thus obtain Lie 2-superalgebras extending the Poincare superalgebra in dimensions 3, 4, 6, and 10, and Lie 3-superalgebras extending the Poincare superalgebra in dimensions 4, 5, 7 and 11. As shown in Sati, Schreiber and Stasheff's work on higher gauge theory, Lie 2-superalgebra connections describe the parallel transport of strings, while Lie 3-superalgebra connections describe the parallel transport of 2-branes. Moreover, in the octonionic case, these connections concisely summarize the fields appearing in 10- and 11-dimensional supergravity.