arXiv (OAI Expanded)
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On the Relation Between Field-Level Posteriors, Correlators, and their Likelihoods
We develop a field-level posterior for cosmological data by marginalizing over initial conditions and noise in a general forward model. While our focus is on large-scale structure data, the results generalize to any weakly non-Gaussian observable. Moreover, the construction is non-perturbative with
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