Superradiance in Black Hole Spacetimes

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• Dominic Dold (CCA)
• Wednesday 18 February 2015, 16:00-17:00
• MR14, Centre for Mathematical Sciences.

If you have a question about this talk, please contact Davide Piazzoli.

The study of superradiance in black hole spacetimes has a long tradition in the physics literature. A superradiant black hole can radiate “energy” through the horizon, which possibly causes instabilities. I will give an overview of results about (massive) wave equations in some black hole spacetimes and I will describe how superradiance manifests itself on the level of these equations. In particular, I will discuss exponentially growing finite energy solutions to the Klein-Gordon equation. I shall try to keep this talk on an accessible level, avoiding technical details.

This talk is part of the Cambridge Analysts' Knowledge Exchange series.

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