Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1999-01-11
J.Geom.Phys. 33 (2000) 23-58
Physics
High Energy Physics
High Energy Physics - Theory
29pages,27 figures
Scientific paper
10.1016/S0393-0440(99)00039-X
In this work (PartI) the qualitative analysis of statics and dynamics of defects and textures in liquid crystals is performed with help of meanders and train tracks. It is argued that similar analysis can be applied to 2+1 gravity. More rigorous justifications are presentedin the companion paper (PartII). Meanders were recently introduced by V.Arnold (Siberian J.of Math. Vol.29,36(1988)). Train tracks were originally introduced by W.Thurston in 1979 in his Princeton U. Lecture Notes (http://www.msri.org/gt3m/) in connection with description of self-homeomorphisms of 2 dimensional surfaces. Using train tracks the master equation is obtained which could be used alternatively to the Wheeler-DeWitt equation for 2+1 gravity. Since solution of this equation requires a large scale numerical work, in this paper we resort to the approximation of train tracks by the meandritic labyrinths. This allows us to analyse possible phases (and phase transitions)in both liquid crystals and gravity using Peierls- like arguments.
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