Gravitational multi-NUT solitons, Komar masses and charges
Guillaume Bossard (AEI), Hermann Nicolai (AEI), K. S. Stelle (AEI,, Imperial Coll., London, CERN)
TL;DR
This paper refines the definitions of gravitational mass and NUT charge, applying them to multi-Taub-NUT solutions, and explores their Euclidean counterparts as gravitational instantons.
Contribution
It provides precise definitions for mass and NUT charge in multi-Taub-NUT solutions and extends these concepts to Euclidean instantons through Wick rotation.
Findings
Defined gravitational mass and NUT charge for multi-Taub-NUT solutions
Constructed multi-instantons via Wick rotation of Lorentzian solutions
Analyzed properties of solutions without rod singularities
Abstract
Generalising expressions given by Komar, we give precise definitions of gravitational mass and solitonic NUT charge and we apply these to the description of a class of Minkowski-signature multi-Taub-NUT solutions without rod singularities. A Wick rotation then yields the corresponding class of Euclidean-signature gravitational multi-instantons.
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