A new algorithm of analyzing the metal-insulator transition of the Anderson model
We study a recently proposed non-Hermitian generalization of the one-electron Anderson model. We propose a new algorithm of calculating the psuedospectrum of the non-Hermitian Hamiltonian by the Lanczos method. The pseudospectrum, approximates the spectrum of the non-Hermitian matrix in the complex plane, from which we can easily obtain the localization length of the Hermitian Anderson model. (C) 2002 Elsevier Science B.V. All rights reserved.
non-hermitian lanczos method anderson localization pseudo-spectrum