Recent results suggest that flow-based algorithms may provide efficient sampling of field distributions for lattice field theory applications, such as studies of quantum chromodynamics and the Schwinger model. In this work, we provide a numerical demonstration of robust flow-based sampling in the Schwinger model at the critical value of the fermion mass. In contrast, at the same parameters, conventional methods fail to sample all parts of configuration space, leading to severely underestimated uncertainties.
@article{arxiv.2202.11712,
title = {Flow-based sampling in the lattice Schwinger model at criticality},
author = {Michael S. Albergo and Denis Boyda and Kyle Cranmer and Daniel C. Hackett and Gurtej Kanwar and Sébastien Racanière and Danilo J. Rezende and Fernando Romero-López and Phiala E. Shanahan and Julian M. Urban},
journal= {arXiv preprint arXiv:2202.11712},
year = {2022}
}
Comments
5 pages main text, 3 pages supplementary material. 4 figures