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Novel wave physics

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  • UserTom Philbin (Exeter)
  • ClockThursday 23 May 2019, 13:45-15:00
  • HouseTheory Library.

If you have a question about this talk, please contact Mike Gunn.

This talk presents some recent, and sometimes surprising, results in three areas of wave physics.

First we show how electromagnetic materials can be designed to control wave scattering. Examples include materials with zero reflection, perfect absorbers, and reflectionless “random” media with perfect transmission. The relation of reflection to the Casimir effect is also discussed.

Second, we show how wave scattering in moving media can cause wave amplification by a process discovered in black hole physics (the Hawking effect). We describe measurements of the Hawking effect for surface waves in a water tank.

Finally we discuss some recent exact solutions for light beams that exhibit many interesting topological structures, including knotted field lines.

This talk is part of the Theoretical Physics Seminars series.

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