High-redshift galaxies at the field level

          @misc{ scivideos_PIRSA:26060038,
            doi = {10.48660/26060038},
            url = {https://pirsa.org/26060038},
            author = {Sullivan, James},
            keywords = {Cosmology},
            language = {en},
            title = {High-redshift galaxies at the field level},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2026},
            month = {jun},
            note = {PIRSA:26060038 see, \url{https://scivideos.org/pirsa/26060038}}
          }
          

Abstract

The future of large-scale structure is at high redshift. In particular, the surveys of the next decade that will be at the vanguard of precision cosmology will target star-forming galaxies at z>2. Field-level inference efforts will, therefore, inevitably turn toward high-redshift samples in the near future, the clustering of which is not yet well-understood. The computational intractability of hydrodynamical simulations means that EFT-bias models at the field level will be especially compelling choices of field-level inference forward models for these samples. I will present my recent work measuring the EFT-bias parameters of simulated high-redshift galaxies at the field-level for the first time. I will also discuss how these results can be leveraged toward building simulation-based priors, which aid current field-level inference efforts.