Gravitating magnetic monopole in Vaidya geometry
Sushant G. Ghosh, L. P. Singh
TL;DR
This paper investigates magnetic monopole solutions within Vaidya spacetime, revealing how gauge and scalar fields influence the resulting geometry and cosmological aspects in a dynamic gravitational background.
Contribution
It presents a novel analysis of 't Hooft-Polyakov monopoles in Vaidya spacetime, highlighting the role of Higgs fields and gauge fields in shaping the geometry and cosmological features.
Findings
Magnetic monopole solutions generate Bonnor-Vaidya geometry.
Scalar fields contribute a cosmological term in the geometry.
Wu-Yang solutions produce Bonnor-Vaidya geometry without a cosmological term.
Abstract
A magnetic-monopole solution of a non-Abelian gauge theory as proposed by 't Hooft and Polyakov is studied in the Vaidya spacetime. We find that the solutions of Einstein equations generates a geometry of the Bonnor-Vaidya corresponding to magnetically charged null fluid with Higgs field contributing a cosmological term. In the absence of the scalar fields the corresponding Wu-Yang solution of the gauge theory still generates the Bonnor-Vaidya geometry, but with no cosmological term.
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