Complex contour deformations of the path integral have been demonstrated to
significantly improve the signal-to-noise ratio of observables in previous
studies of two-dimensional gauge theories with open boundary conditions. In
this work, new developments based on gauge fixing and a neural network
definition of the deformation are introduced, which enable an effective
application to theories in higher dimensions and with generic boundary
conditions. Improvements of the signal-to-noise ratio by up to three orders of
magnitude for Wilson loop measurements are shown in SU(2) lattice gauge
theory in three spacetime dimensions.Comment: 9 pages, 3 figures. Proceedings for the 40th Lattice conference at
Fermilab from July 31 to August 4, 202