PIRSA:26040113 Conference Cosmology

DOI10.48660/26040113

Conference/School: Cosmological Frontiers in Fundamental Physics 2026

Gurian, J. (2026). Core Collapse Beyond the Fluid Approximation. Perimeter Institute. https://pirsa.org/26040113

Gurian, James. Core Collapse Beyond the Fluid Approximation. Perimeter Institute, Apr. 27, 2026, https://pirsa.org/26040113 

@misc{ pirsa_PIRSA:26040113,
  doi = {10.48660/26040113},
  url = {https://pirsa.org/26040113},
  author = {Gurian, James},
  keywords = {Cosmology},
  language = {en},
  title = {Core Collapse Beyond the Fluid Approximation},
  publisher = {Perimeter Institute},
  year = {2026},
  month = {apr},
  note = {PIRSA:26040113 see, \url{https://pirsa.org}}
}

Abstract

I will discuss a new kinetic code for simulating core collapse in self-interacting dark matter halos, KiSS-SIDM. Using this code, we find that in the intermediate stages of the collapse the dark matter is not well-described as an ideal fluid. A more general point is that studying structure formation in hidden sector models is challenging, and will require new tools and techniques.

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