PIRSA:26040087 Scientific Series Particle Physics

DOI10.48660/26040087

Series: Particle Physics

McDonough, E. (2026). Cosmic Inflation and the Ultralight-Superheavy Dark Matter Connection. Perimeter Institute. https://pirsa.org/26040087

McDonough, Evan. Cosmic Inflation and the Ultralight-Superheavy Dark Matter Connection. Perimeter Institute, Apr. 10, 2026, https://pirsa.org/26040087 

@misc{ pirsa_PIRSA:26040087,
  doi = {10.48660/26040087},
  url = {https://pirsa.org/26040087},
  author = {McDonough, Evan},
  keywords = {Particle Physics},
  language = {en},
  title = {Cosmic Inflation and the Ultralight-Superheavy Dark Matter Connection},
  publisher = {Perimeter Institute},
  year = {2026},
  month = {apr},
  note = {PIRSA:26040087 see, \url{https://pirsa.org}}
}

Abstract

The range of possible masses of particle dark matter spans over many orders of magnitude. The extremes of the mass range -- so-called ''superheavy'' and ''ultralight'' dark matter candidates -- are increasingly attracting attention due to their novel phenomenology and new developments in production mechanisms. In this talk I will discuss the complementary nature of superheavy and ultralight dark matter, starting from the production during cosmic inflation, using examples from the string theory axiverse and from a QCD-like dark sector.

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