An exact smooth Gowdy-symmetric generalized Taub-NUT solution

Abstract

In a recent paper (Beyer and Hennig, 2012 [9]), we have introduced a class of inhomogeneous cosmological models: the smooth Gowdy-symmetric generalized Taub-NUT solutions. Here we derive a three-parametric family of exact solutions within this class, which contains the two-parametric Taub solution as a special case. We also study properties of this solution. In particular, we show that for a special choice of the parameters, the spacetime contains a curvature singularity with directional behaviour that can be interpreted as a "true spike" in analogy to previously known Gowdy symmetric solutions with spatial T3-topology. For other parameter choices, the maximal globally hyperbolic region is singularity-free, but may contain "false spikes".

39 pages, 3 figures

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• Generating spiky solutions of Einstein field equations with the Stephani transformation
• The Endpoint Theorem
• Smooth Gowdy-symmetric generalised Taub-NUT solutions in Einstein-Maxwell theory
• NUT Solutions in Einstein-Maxwell-scalar-Gauss-Bonnet Gravity
• Smooth Gowdy-symmetric generalised Taub-NUT solutions with polynomial initial data
• Exact solutions and their interpretation - session A1