Geometry & Topology

The shape of hyperbolic Dehn surgery space

Craig Hodgson and Steven Kerckhoff

Full-text: Open access

Abstract

In this paper we develop a new theory of infinitesimal harmonic deformations for compact hyperbolic 3–manifolds with “tubular boundary”. In particular, this applies to complements of tubes of radius at least R0= arctanh(13)0.65848 around the singular set of hyperbolic cone manifolds, removing the previous restrictions on cone angles.

We then apply this to obtain a new quantitative version of Thurston’s hyperbolic Dehn surgery theorem, showing that all generalized Dehn surgery coefficients outside a disc of “uniform” size yield hyperbolic structures. Here the size of a surgery coefficient is measured using the Euclidean metric on a horospherical cross section to a cusp in the complete hyperbolic metric, rescaled to have area 1. We also obtain good estimates on the change in geometry (eg volumes and core geodesic lengths) during hyperbolic Dehn filling.

This new harmonic deformation theory has also been used by Bromberg and his coworkers in their proofs of the Bers Density Conjecture for Kleinian groups.

Article information

Source
Geom. Topol., Volume 12, Number 2 (2008), 1033-1090.

Dates
Received: 22 September 2007
Accepted: 20 February 2008
First available in Project Euclid: 20 December 2017

Permanent link to this document
https://projecteuclid.org/euclid.gt/1513800068

Digital Object Identifier
doi:10.2140/gt.2008.12.1033

Mathematical Reviews number (MathSciNet)
MR2403805

Zentralblatt MATH identifier
1144.57015

Subjects
Primary: 57M50: Geometric structures on low-dimensional manifolds
Secondary: 57N10: Topology of general 3-manifolds [See also 57Mxx]

Keywords
hyperbolic Dehn surgery harmonic deformation

Citation

Hodgson, Craig; Kerckhoff, Steven. The shape of hyperbolic Dehn surgery space. Geom. Topol. 12 (2008), no. 2, 1033--1090. doi:10.2140/gt.2008.12.1033. https://projecteuclid.org/euclid.gt/1513800068


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