A class of Lorentzian Kac-Moody algebras

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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40 pages TeX, 5 eps-figures

Scientific paper

10.1016/S0550-3213(02)00690-9

We consider a natural generalisation of the class of hyperbolic Kac-Moody algebras. We describe in detail the conditions under which these algebras are Lorentzian. We also construct their fundamental weights, and analyse whether they possess a real principal so(1,2) subalgebra. Our class of algebras include the Lorentzian Kac-Moody algebras that have recently been proposed as symmetries of M-theory and the closed bosonic string.

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