Speaker
Mustafa Amin
(Rice University)
Description
Light post-inflationary axions are generically warm and noisy, leading to early, scale-dependent structure formation on observationally accessible scales. I will highlight results from a general, multi-species–friendly analytical framework, together with lattice numerical simulations, of such structure formation and its implications. In particular, the absence of both (1) free-streaming–induced small-scale suppression, and (2) Poisson-noise–driven enhancement in the matter power spectrum implies a lower bound on the dark matter mass of 10^(−19) eV.
| Main Contribution topic | Cosmology Dark Matter |
|---|---|
| Secondary contribution topic | Light Dark Matter |
Author
Mustafa Amin
(Rice University)