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July 9, 2020 to January 31, 2025
Europe/Zurich timezone

Fuzzy Fields for Cosmic Conundrums

Mar 3, 2023, 3:00 PM
1h 20m


Daniel Grin (Haverford college)


High-energy particle theory motivates that a very light (m<<10^{-12} eV) field may exist, in addition to the usual standard model spectrum. If so, such a field could contribute to the dark matter and dark energy of the universe at a broad range of epochs. In this talk, I will explore the impact of such a field as a dark matter component (though its impact on CMB anisotropies), as a contributor to late-time acceleration or early dark energy components, and as a field driving evolution in the fundamental constants of nature. I will connect theory to observations, and perhaps preview the promise of future CMB and other cosmological experiments.

Presentation materials