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Grid2D<Eigenvectors> -> Integer
Calculate the topological Chern number over a discretized 2D Brillouin zone by computing gauge-invariant link variables on grid plaquettes.
Problem it solves
Standard Chern number calculations diverge or fail when wavefunctions have arbitrary, discontinuous numerical gauges across a 2D grid.
Consumes
Emits
The real projects this mechanism was found in. Attribution is the point — this is how the best teams actually do it.