Non-perturbative non-Gaussianity and primordial black holesA. D. Gow, H. Assadullahi, J. H. P. Jackson, K. Koyama, V. Vennin and D. WandsEPL, 142 4 (2023) 49001DOI: https://doi.org/10.1209/0295-5075/acd417