  The complexification of field variables is an elegant approach to attack the
sign problem. In one approach one integrates on Lefschetz thimbles: over them,
the imaginary part of the action stays constant and can be factored out of the
integrals so that on each thimble the sign problem disappears. However, for
systems in which more than one thimble contribute one is faced with the
challenging task of collecting contributions coming from multiple thimbles. The
Thirring model is a nice playground to test multi-thimble integration
techniques; even in a low dimensional theory, the thimble structure can be
rich. It has been shown since a few years that collecting the contribution of
the dominant thimble is not enough to capture the full content of the theory.
We report preliminary results on reconstructing the complete results from
multiple thimble simulations.

High Energy Physics - Lattice