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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
A monopole near a black hole
Claudio Bunster1, Marc Henneaux
1Centro de Estudios Científicos, Valdivia, Chile. bunster@cecs.cl
Summary
Electric and magnetic charges at rest create angular momentum. Adding gravity to this system, specifically an electric charge near a magnetic black hole, results in the charge
Area of Science:
- Theoretical physics
- General relativity
- Electromagnetism
Background:
- Electric and magnetic charges at rest exhibit inherent angular momentum.
- This exotic angular momentum is independent of charge separation.
Purpose of the Study:
- To investigate the influence of gravity on the angular momentum of electric and magnetic charges.
- To analyze the behavior of an electric charge interacting with a magnetically charged black hole.
Main Methods:
- Perturbation theory applied to a magnetic Reissner-Nordstrom black hole.
- Analysis of spacetime geometry modifications due to an external electric charge.
Main Results:
- The exterior geometry transitions from magnetic Reissner-Nordstrom to magnetic Kerr-Newman as the electric charge approaches.
- Upon horizon crossing, the geometry becomes a Kerr-Newman black hole, with conserved angular momentum.
- The conserved angular momentum aligns with the standard value for a charged monopole pair.
Conclusions:
- The 'no-hair theorem' is upheld, as the exotic angular momentum is reinterpreted as common rotation after black hole capture.
- Gravitational effects reconcile the exotic angular momentum with standard black hole physics.
- Similar phenomena are expected in Taub-NUT spacetime.
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