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arXiv 0811.2786hep-thgr-qc
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多维宇宙学模型中的台球方法

On billiard approach in multidimensional cosmological models

V. D. Ivashchuk, V. N. Melnikov

摘要:

一个简短的概述台球方法的宇宙型模型与n爱因斯坦因子空间。我们从宇宙学起源的伪欧几里德Toda类系统的台球表示开始。然后我们考虑了多组分“理想流体”宇宙模型和复合膜宇宙模型。第二个描述宇宙学和球对称配置的理论与标量场和领域的形式。给出了在极限τ \to +0和τ \to + \infty(其中τ是“同步型”变量)中出现渐近Kasner型和振荡行为的条件(例如Kasner参数的不等式)。给出了与双曲卡茨-穆迪代数E_{10}、AE_3和A_{1,II}有关的台球例子。

英文摘要:

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 τ\to +0 and τ\to + \infty (where τis 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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