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hep-th2004
Hyperbolic Kac Moody Algebras and Einstein Billiards
S. de Buyl, C. Schomblond
We identify the hyperbolic Kac Moody algebras for which there exists a Lagrangian of gravity, dilatons and -forms which produces a billiard that can be identified with their fun…
hep-th2003
Einstein billiards and spatially homogeneous cosmological models
Sophie de Buyl, Gaia Pinardi, Christiane Schomblond
In this paper, we analyse the Einstein and Einstein-Maxwell billiards for all spatially homogeneous cosmological models corresponding to 3 and 4 dimensional real unimodular Lie alg…