PIRSA:26060050

Video URL

https://pirsa.org/26060050

Field-Level Inference of Primordial Non-Gaussianity

Simon, H. (2026). Field-Level Inference of Primordial Non-Gaussianity. Perimeter Institute for Theoretical Physics. https://pirsa.org/26060050

Simon, Hugo. Field-Level Inference of Primordial Non-Gaussianity. Perimeter Institute for Theoretical Physics, Jun. 10, 2026, https://pirsa.org/26060050 

          @misc{ scivideos_PIRSA:26060050,
            doi = {10.48660/26060050},
            url = {https://pirsa.org/26060050},
            author = {Simon, Hugo},
            keywords = {Cosmology},
            language = {en},
            title = {Field-Level Inference of Primordial Non-Gaussianity},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2026},
            month = {jun},
            note = {PIRSA:26060050 see, \url{https://scivideos.org/pirsa/26060050}}
          }

Hugo Simon CEA Paris-Saclay

Talk numberPIRSA:26060050
DOI10.48660/26060050
Source RepositoryPIRSA
Collection
Talk Type Conference
Subject

Abstract

Field-Level Inference (FLI) needs to be made more tractable and robust at survey scale. To this purpose, I developed fast, differentiable cosmological simulators and introduced a standardized benchmark, showing how to reduce the required model evaluations by orders of magnitude. Building on this, I am working toward FLI constraints on local Primordial Non-Gaussianity (PNG) from DESI. I will show the validation of the pipeline on N-body simulations with HOD-populated galaxies, carefully assessing model fidelity and calibration, progressively incorporating survey realism at the field-level, and in parallel extending the analysis to a multi-probe framework combining galaxy clustering with CMB lensing.