Gauge-invariant magnetic charges in linearised gravity
Chris Hull, Maxwell L. Hutt, Ulf Lindstr\"om
TL;DR
This paper introduces a gauge-invariant expression for magnetic charges in linearised gravity, analogous to Penrose's gauge-invariant ADM charges, and explores the existence of other such charges.
Contribution
It provides the first gauge-invariant formula for magnetic charges in linearised gravity and systematically searches for additional gauge-invariant charges.
Findings
Derived a gauge-invariant expression for magnetic charges
Identified Kaluza-Klein monopoles as carriers of magnetic charges
Found potential for other gauge-invariant charges in linearised gravity
Abstract
Linearised gravity has magnetic charges carried by (linearised) Kaluza-Klein monopoles. A gauge-invariant expression is found for these charges that is similar to Penrose's gauge-invariant expression for the ADM charges. A systematic search is made for other gauge-invariant charges.
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Taxonomy
TopicsGeophysics and Gravity Measurements · Geomagnetism and Paleomagnetism Studies · Solar and Space Plasma Dynamics