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# VERSION hep-th / 0401053 UCB-PTH-0401 LBNL-54228 M-theory and E 10 : Billiards , Branes , and Imaginary Roots

@inproceedings{Brown2004VERSIONH, title={VERSION hep-th / 0401053 UCB-PTH-0401 LBNL-54228 M-theory and E 10 : Billiards , Branes , and Imaginary Roots}, author={Jeffrey R Brown and Ori J. Ganor and Craig Helfgott}, year={2004} }

- Published 2004

Eleven dimensional supergravity compactified on T 10 admits classical solutions describing what is known as billiard cosmology – a dynamics expressible as an abstract (billiard) ball moving in the 10-dimensional root space of the infinite dimensional Lie algebra E10, occasionally bouncing off walls in that space. Unlike finite dimensional Lie algebras, E10 has negative and zero norm roots, in addition to the positive norm roots. The walls above are related to physical fluxes that, in turn, are… CONTINUE READING

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