#### Volume 12, issue 1 (2008)

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Quakebend deformations in complex hyperbolic quasi-Fuchsian space

### Ioannis D Platis

Geometry & Topology 12 (2008) 431–459
##### Abstract

We study quakebend deformations in complex hyperbolic quasi-Fuchsian space ${\mathsc{Q}}_{ℂ}\left(\Sigma \right)$ of a closed surface $\Sigma$ of genus $g>1$, that is the space of discrete, faithful, totally loxodromic and geometrically finite representations of the fundamental group of $\Sigma$ into the group of isometries of complex hyperbolic space. Emanating from an $ℝ$–Fuchsian point $\rho \in {\mathsc{Q}}_{ℂ}\left(\Sigma \right)$, we construct curves associated to complex hyperbolic quakebending of $\rho$ and we prove that we may always find an open neighborhood $U\left(\rho \right)$ of $\rho$ in ${\mathsc{Q}}_{ℂ}\left(\Sigma \right)$ containing pieces of such curves. Moreover, we present generalisations of the well known Wolpert–Kerckhoff formulae for the derivatives of geodesic length function in Teichmüller space.

##### Keywords
complex hyperbolic, bending
Primary: 32G05
Secondary: 32M05
##### Publication
Received: 23 February 2007
Accepted: 6 December 2007
Published: 12 March 2008
Proposed: Jean-Pierre Otal
Seconded: Walter Neumann, Benson Farb
##### Authors
 Ioannis D Platis Department of Mathematics Aristotle University of Salonica Salonica Greece http://www.math.uoc.gr/~jplatis/