Detectable Vector Dark Matter

Speaker: David Cyncynates (University of Washington) Date: Monday, April 22, 2024 Time: 4:00 – 5:00 pm Location: 472 Willamette Hall Abstract: Ultralight dark photons are compelling dark matter candidates, but their allowed kinetic mixing with the Standard Model ...

Searching for Dark Matter Axions with DMRadio

Speaker: Maria Simanovskaia (Stanford University) Date: Monday, April 15, 2024 Time: 4:00 – 5:00 pm Location: 472 Willamette Hall Abstract: The nature of dark matter is one of the biggest mysteries of the modern era. The axion is a promising dark ...

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Stepping Into the Forest: Confronting Interacting Dark Sector Models for the Hubble Tension With Lyα Data

Speaker: Melissa Joseph Date: Monday, March 18, 2024 Time: 4:00 – 5:00 pm Location: 472 Willamette Hall Abstract: Models of dark sectors with a mass threshold can have important ...

Fast and Differentiable Big Bang Nucleosynthesis

Speaker: Hongwan Liu Date: Monday, March 11, 2024 Time: 4:00 – 5:00 pm Location: 472 Willamette Hall Abstract: The process of Big Bang Nucleosynthesis (BBN) is a crucial test of cosmology. In this talk, I will describe a new code for predicting ...

Measuring Hubble’s Constant with JWST Observations of a Galaxy Clusters

Speaker: Brenda Frye Date: Thursday, March 7, 2024 Time: 1:30 – 2:30 pm Location: 472 Willamette Hall Abstract: Galaxy clusters acting as gravitational lenses offer two advantages: to boost the brightnesses of ...

Leptogenesis from Freeze In

Speaker: Brian Shuve (Harvey Mudd College) Date: Monday, February 12, 2024 Time: 4:00 – 5:00 pm Location: 472 Willamette Hall Abstract: Models of freeze in feature a departure from equilibrium over an extended period of the early universe’s history, and they can ...

The Cosmology of Electron Scalars

Speaker: Zach Weiner (University of Washington) Date: Monday, January 29, 2024 Time: 4:00 – 5:00 pm Location: 472 Willamette Hall Abstract: The cosmic microwave background is a sensitive probe of early-Universe physics, and yet fundamental constants at ...

The Callan Rubakov Effect

Speaker: T. Daniel Brennan (University of California, San Diego) Date: Monday, January 22, 2024 Time: 4:00 – 5:00 pm Location: 472 Willamette Hall Abstract: The Callan Rubakov Effect describes the interaction between (massless) fermions and a smooth monopole in ...

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