On the accuracy and precision of correlation functions and field-level inference in cosmology

  title={On the accuracy and precision of correlation functions and field-level inference in cosmology},
  author={Florent Leclercq and A. F. Heavens},
  journal={Monthly Notices of the Royal Astronomical Society: Letters},
  • F. Leclercq, A. Heavens
  • Published 6 March 2021
  • Physics
  • Monthly Notices of the Royal Astronomical Society: Letters
We present a comparative study of the accuracy and precision of correlation function methods and full-field inference in cosmological data analysis. To do so, we examine a Bayesian hierarchical model that predicts lognormal (LN) fields and their two-point correlation function. Although a simplified analytic model, the LN model produces fields that share many of the essential characteristics of the present-day non-Gaussian cosmological density fields. We use three different statistical… 

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