Speaker
Kimberly Boddy
(University of Texas at Austin)
Description
The presence of ultralight dark matter in the early Universe suppresses small-scale structure formation. Moreover, if it couples to the Standard Model, it can induce a variation of fundamental constants. In this talk, I will discuss the cosmological impact of an ultralight dark matter field with an effective quadratic coupling to the Standard Model, such that the fine structure constant and the mass of the electron have time-dependent, oscillatory variations. I will present CMB constraints on this scenario for a wide range of dark matter masses, associated with the oscillations occurring around BBN and the formation of the CMB.
| References | associated paper will appear on arXiv in the coming weeks |
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Author
Kimberly Boddy
(University of Texas at Austin)
