Fig. 5: Many-body Berry curvature as a function of discretized boundary phases.
From: Topological flat bands in a kagome lattice multiorbital system
a Sector (k1, k2) = (0, 0), b sector (0, 2), and c sector (0, 4). Parameter values are tδ = 0.5, r2 = −0.2, λ = 0.2 with U = 2 and V = 1.
