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New fundamental forces can play a crucial role in models of dark matter and they are predicted by many theories of particle physics beyond the Standard Model. Such new forces are said to be "dark" if they interact only very weakly with ordinary matter. They could take many forms, with specific examples being similar to the electromagnetic or strong forces, and in some cases they can even be the source of dark matter themselves. In this talk I will describe how such forces might arise and what they can do in the early universe. In particular, I will show how detailed measurements of primordial element abundances and the cosmic microwave background radiation can be used to search for them.

Guillaume Giroux is inviting you to a scheduled Zoom meeting.

Topic: Departmental Colloquium: David Morrissey

Time: Nov 20, 2020 13:30 Eastern Time (US and Canada)

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