Weil-Petersson geometry of Teichmuller-Coxeter complex and its finite rank property

Abstract

We construct a Weil-Petersson geodesic completion of Teichmuller space through the formalism of Coxeter complex with the Teichmuller space as its non-linear non-homogeneous fundamental domain. We show that the metric and geodesic completions both satisfy a finite rank property, demonstrating a similarity with the non-compact symmetric spaces of semi-simple Lie groups.

31pages, new version contains a few typos corrected, and a minor modification