On billiard approach in multidimensional cosmological models

Details On billiard approach in multidimensional cosmological models On billiard approach in multidimensional cosmological models

2008-11-17

arxiv.org/abs/0811.2786v1

Grav.Cosmol.15:49-58,2009

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, Latex, based on plenary report at RUSGRAV-13 (23-28 June, 2008, PFUR, Moscow)

Scientific paper

10.1134/S0202289309010137

A short overview of the billiard approach for cosmological-type models with n Einstein factor-spaces is presented. We start with the billiard representation for pseudo-Euclidean Toda-like systems of cosmological origin. Then we consider cosmological model with multicomponent "perfect-fluid" and cosmological-type model with composite branes. The second one describes cosmological and spherically-symmetric configurations in a theory with scalar fields and fields of forms. The conditions for appearance of asymptotical Kasner-like and oscillating behaviors in the limit \tau \to +0 and \tau \to + \infty (where \tau is a "synchronous-type" variable) are formulated (e.g. in terms of inequalities on Kasner parameters). Examples of billiards related to the hyperbolic Kac-Moody algebras E_{10}, AE_3 and A_{1,II} are given.

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