An article that we are finalizing at CQTS:
Grigorios Giotopoulos, Hisham Sati and Urs Schreiber:
The Hidden M-Group
download: pdf
Abstract. Following arguments that the M-algebra – both in its basic version and via its “hidden” extension – serves as the maximal super-exceptional tangent space for 11D supergravity, we here make it explicit as a (super-Lie) group equipped with a left-invariant extension of the “decomposed” M-theory 3-form, such that it constitutes the Kleinian space on which super-exceptional spacetimes are to be locally modeled as Cartan geometries.
As a simple but consequential application we highlight how to describe lattice subgroups of the hidden M-group which allow to toroidially compactify also the “hidden” dimensions of a super-exceptional spacetime, akin to the familiar situation in topological T-duality.
To deal with subtleties in the construction we also (1.) provide a computer-checked re-derivation of the “decomposed” 3-form, and we (2.) present a streamlined conception of super-Lie groups which is both rigorous while still close to physics practice.
Thereby this article is mostly a combined review of some modernized super-Lie theory along the example of the hidden M-algebra, with an eye towards laying foundations for super-exceptional geometry. Among new result is dimensional reduction of the hidden M-algebra to a “hidden IIA-algebra” which in a companion article we explain as an exceptional extension of the T-duality doubled super-spacetime.
Followup to:
The M-algebra completes the hierarchy of Super-Exceptional Tangent Spaces
Super-exceptional M5-brane model – Emergence of SU(2)-flavor sector
Last revised on November 12, 2024 at 09:22:05. See the history of this page for a list of all contributions to it.