Dec 15 – 16, 2022
Centre for Particle Theory, Durham
Europe/London timezone

Astrophysics Searches for Oscillations in the Axiverse

Dec 15, 2022, 2:20 PM
Ph8 (zoom room 1) (Centre for Particle Theory, Durham)

Ph8 (zoom room 1)

Centre for Particle Theory, Durham

Department of Physics Durham University South Road Durham DH1 3LE
Gong show talk (5 mins) Gong Show Talks


James Maxwell (Durham University)


String compactification can give rise to a large spectrum of pseudo-scalar, axion like particles (ALPs). These ALPs will generally have different masses and so, akin to neutrinos, may oscillate among their flavour states. By considering the large distance scales present in astrophysical scenarios, the phenomenological implications of this behaviour can be investigated. The excessive transparency of the universe to blazar photons hints at the existence of a spectrum of ALPs. Through a numerical study we are able to place limits on the cardinality of this spectrum. We consider ALPs with a stringy mass distribution and anarchical standard model couplings.

Type of presentation 5 minute talk
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Primary author

James Maxwell (Durham University)

Presentation materials