Nicholas Rodd - Echos of the Early Universe in Axion Haloscopes

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• Nicholas Rodd
• Friday 28 April 2023, 16:00-17:00
• Potter Room (B1.19).

If you have a question about this talk, please contact Rene Poncelet.

Zoom: https://maths-cam-ac-uk.zoom.us/j/95336793441?pwd=U2V6aHJ6RllROVBtYy9VZlFnVlhYZz09 Meeting ID: 953 3679 3441 Passcode: 888178

Abstract: The coming decade will bring dramatic improvement in the axion dark-matter program as new experimental designs move beyond the proof of principle stage. In this talk I will outline two signals beyond dark matter that these instruments could discover. The first is a population of relativistic axions that were produced in the early universe and persist as a residual Cosmic axion Background (CaB). The second is high-frequency gravitational waves; I will outline how exploiting an analogy between axion and gravitational-wave electrodynamics allows for axion haloscopes to be converted into gravitational-wave telescopes.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

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