quimb.tensor.tensor_approx_spectral¶ Approximating spectral functions with tensor networks. Functions¶ construct_lanczos_tridiag_MPO(A, K[, v0, ...]) Module Contents¶ quimb.tensor.tensor_approx_spectral.construct_lanczos_tridiag_MPO(A, K, v0=None, initial_bond_dim=None, beta_tol=1e-06, max_bond=None, seed=False, v0_opts=None, k_min=10)[source]¶