Hatano, Naomichi; Watanabe, Takahiro; Yamasaki, Junko - In: Physica A: Statistical Mechanics and its Applications 314 (2002) 1, pp. 170-176
A type of non-Hermitian generalization of quantum mechanics is discussed. We introduce an imaginary vector potential to the Hamiltonian of systems such as Anderson-localization systems and mesoscopic systems. In these systems the imaginary part of the wave number of the eigenfunction asymptote...