Cosmology with DESI DR2: From BAO to Full-Shape Clustering

April 29, 2026 PIRSA:26040071 Conference Cosmology

Conference/School: Cosmological Frontiers in Fundamental Physics 2026

Zhang, H. (2026). Cosmology with DESI DR2: From BAO to Full-Shape Clustering. Perimeter Institute. https://pirsa.org/26040071

Zhang, Hanyu. Cosmology with DESI DR2: From BAO to Full-Shape Clustering. Perimeter Institute, Apr. 29, 2026, https://pirsa.org/26040071

@misc{ pirsa_PIRSA:26040071,
  doi = {10.48660/26040071},
  url = {https://pirsa.org/26040071},
  author = {Zhang, Hanyu},
  keywords = {Cosmology},
  language = {en},
  title = {Cosmology with DESI DR2: From BAO to Full-Shape Clustering},
  publisher = {Perimeter Institute},
  year = {2026},
  month = {apr},
  note = {PIRSA:26040071 see, \url{https://pirsa.org}}
}

Abstract

The Dark Energy Spectroscopic Instrument (DESI) is mapping the large-scale structure of the Universe with unprecedented precision, opening a new window on cosmic expansion and the growth of structure. In this talk, I will give a brief introduction to the DESI survey and highlight recent results from Data Release 2 based on galaxy clustering measurements. I will first summarize the latest baryon acoustic oscillation constraints, and then discuss the ongoing full-shape analysis effort, including validation through mock challenges and the incorporation of higher-order information. The presentation will provide a concise snapshot of where DESI DR2 stands today and what these developments imply for upcoming cosmological constraints.