Dark matter

We have strong astrophysical evidences from the early and the late Universe that there must be something called "dark matter". This mysterious stuff dominates the matter content of the Universe today and is crucial for structure formation that made the existence of human possible. Nevertheless, we have not seen any experimental evidences of this elusive matter here on earth.

If dark matter is particles, their final abundance depends not only on the particle physics model but also on the thermal history. A nonstandard thermal history, such as early matter domination, is possible before the time of Big Bang Nucleosynthesis since we don't have observational probes for the era earlier than that. 

I'm interested in studying the dark matter production mechanisms in the early Universe with standard and nonstandard thermal history.

• Rouzbeh Allahverdi, Ngo Phuc Duc Loc, and Jacek K. Osiński, "Dark matter from mediator decay in early matter domination", Phys. Rev. D 110, 023511 (2024)

• Rouzbeh Allahverdi, Ngo Phuc Duc Loc, and Jacek K. Osiński, "Dark matter and baryogenesis from visible-sector long-lived particles", Phys. Rev. D 107, 123510 (2023)