Flow-based sampling for lattice field theories

Abstract

Critical slowing down and topological freezing severely hinder Monte Carlo sampling of lattice field theories as the continuum limit is approached. Recently, significant progress has been made in applying a class of generative machine learning models, known as "flow-based" samplers, to combat these issues. These generative samplers also enable promising practical improvements in Monte Carlo sampling, such as fully parallelized configuration generation. These proceedings review the progress towards this goal and future prospects of the method.

Comments: 21 pages, 7 figures, Plenary talk at the 40th International Symposium on Lattice Field Theory (Lattice 2023); references added