String Theory Seminars

K(E10) and Standard Model Fermions ( Special Quantum Spacetime seminar)

by Prof. Hermann Nicolai (Max Planck Institute for Gravitational Physics)

Wednesday, November 13, 2019 from to (Asia/Kolkata)
at A 304
In this talk I will explain the possible relevance of the `maximally extended' hyperbolic Kac-Moody algebra E10 and its maximal compact subalgebra K(E10) for unification. In particular I will show how K(E10) can be put to use to amend a proposal due to M. Gell-Mann aimed at identifying the 48 spin-1/2 fermions of N=8 supergravity that remain after complete breaking of supersymmetry with the 3 x 16 quarks and leptons of the Standard Model. The supermassive gravitinos could then play a crucial role in explaining both dark matter and the ultra-high energy cosmic ray (UHECR) events observed over many years at the Pierre Auger Observatory.