Cusps in complex boundaries of one-dimensional Teichmüller space

Miyachi, Hideki

doi:10.1090/S1088-4173-03-00065-1

Cusps in complex boundaries of one-dimensional Teichmüller space
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Conform. Geom. Dyn. 7 (2003), 103-151 Request permission

Abstract:

This paper gives a concrete proof of the conjectural phenomena on the complex boundary one-dimensional slices: every rational boundary point is cusp shaped. This paper treats this problem for Bers slices, the Earle slice, and the Maskit slice. In proving this, we also show that every Teichmüller modular transformation acting on a Bers slice can be extended as a quasi-conformal mapping on its ambient space. Furthermore, using this extension, we discuss similarity phenomena on the boundaries of Bers slices, and also compare these phenomena with results in complex dynamics. We will also give a result, related to the theory of L. Keen and C. Series, of pleated varieties in quasifuchsian space of once punctured tori.

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