Deformations of glued G2-manifolds

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Abstract

We study how a gluing construction, which produces compact manifolds with holonomy G2 from matching pairs of asymptotically cylindrical G 2-manifolds, behaves under deformations. We show that the gluing construction defines a smooth map from a moduli space of gluing data to the moduli space M of torsion-free G2-structures on the glued manifold, and that this is a local diffeomorphism. We use this to partially compactify M, including it as the interior of a topological manifold with boundary. The boundary points are equivalence classes of matching pairs of torsion-free asymptotically cylindrical G2-structures.
Original languageEnglish
Pages (from-to)481-503
Number of pages23
JournalCommunications in Analysis & Geometry
Volume17
Issue number3
DOIs
Publication statusPublished - 1 Jul 2009

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