PIRSA:25040113 Scientific Series Particle Physics

DOI10.48660/25040113

Series: Particle Physics

Rodd, N. (2025). A Quantum Description of Wave Dark Matter. Perimeter Institute. https://pirsa.org/25040113

Rodd, Nicholas. A Quantum Description of Wave Dark Matter. Perimeter Institute, Apr. 15, 2025, https://pirsa.org/25040113 

@misc{ pirsa_PIRSA:25040113,
  doi = {10.48660/25040113},
  url = {https://pirsa.org/25040113},
  author = {Rodd, Nicholas},
  keywords = {Particle Physics},
  language = {en},
  title = {A Quantum Description of Wave Dark Matter},
  publisher = {Perimeter Institute},
  year = {2025},
  month = {apr},
  note = {PIRSA:25040113 see, \url{https://pirsa.org}}
}

Abstract

In this talk I will outline a fundamentally quantum description of bosonic dark matter from which the conventional classical-wave picture emerges when the mass is far below 10 eV. Exploiting fundamental results from quantum optics I will argue that the density matrix for dark matter is explicitly mixed. The formalism provides a continuous description of DM through the wave-particle transition, and using this I show how density fluctuations over various physical scales evolve between the two limits, with a unique behavior for DM emerging near the boundary of the wave and particle descriptions. If time permits, I will briefly describe how these effects would appear in axion haloscopes.

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