18 citations · 52 across the 6 of their papers we have counts for
9 papers
Gravitational Billiards, Dualities and Hidden Symmetries
H. Nicolai
The purpose of this article is to highlight the fascinating, but only very incompletely understood relation between Einstein's theory and its generalizations on the one hand, and t…
Eleven dimensional supergravity and the E10/KE10 sigma-model at low A9 levels
T. Damour, H. Nicolai
Recently, the concept of a nonlinear sigma-model over a coset space G/H was generalized to the case where the group G is an infinite-dimensional Kac-Moody group, and H its (formal)…
Gauged Supergravities in Three Dimensions: A Panoramic Overview
B. de Wit, H. Nicolai, H. Samtleben
Maximal and non-maximal supergravities in three spacetime dimensions allow for a large variety of semisimple and non-semisimple gauge groups, as well as complex gauge groups that h…
Subalgebras of Hyperbolic Kac-Moody Algebras
Alex J. Feingold, Hermann Nicolai
The hyperbolic (and more generally, Lorentzian) Kac-Moody (KM) Lie algebras $\cA$ of rank are shown to have a rich structure of indefinite KM subalgebras which can be des…
Low Level Representations for E10 and E11
Hermann Nicolai, Thomas Fischbacher
We work out the decomposition of the indefinite Kac Moody algebras and w.r.t. their respective subalgebras and at low levels. Tables of the irr…
Vacua of Maximal Gauged D=3 Supergravities
T. Fischbacher, H. Nicolai, H. Samtleben
We analyze the scalar potentials of maximal gauged three-dimensional supergravities which reveal a surprisingly rich structure. In contrast to maximal supergravities in dimensions…