Fig. 2: Deconstructing band topology and spectral topology.
From: Chiral damping with persistent edge states from the interplay of topologies in open quantum systems

Static polarization PS for the original eigenstates of the damping matrix X, and after effectively removing the non-Hermitian skin effect by the application of an imaginary gauge transformation only to X, but not to the eigenstates. Here, γl = 0.2, γg = 0, ϕ/ϕ0 = 1/4, tx = ty = 1, and Ly = 40.