Oral Presentation

Differentiable Hydrodynamical Simulation for Galaxy - Large Scale Structure Connection

Author(s): Benjamin Horowitz (IPMU)

Presenter: Benjamin Horowitz (IPMU)

Ongoing and upcoming surveys will reach unprecedented depths and number densities, providing a wealth of information about the large scale structure of the Universe. However, current perturbative approaches struggle to accurately model small-scale clustering due to uncertainties in galaxy formation and bias modeling. While various astrophysical probes can inform these models, no existing cosmological hydrodynamical simulation can self-consistently capture all relevant processes due to uncertainties in sub-grid physics. I will present a new generation of hydrodynamical simulations which allow rapid gradient estimation through both the gas dynamics and sub-grid models, facilitating efficient inference of underlying physical parameters and initial conditions. This framework opens new avenues for fully exploiting next-generation survey data at the field level.