Imaginary time propagation code for large-scale two-dimensional eigenvalue problems in magnetic fields

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018) Abstract We present a code for solving the single-particle, time-independent Schrödinger equation in two dimensions. Our program utilizes the imaginary time propagation (ITP) algorithm, and it includes the most recent developments in the ITP method: the arbitrary order operator factorization and the exact inclusion of a (possibly very strong) magnetic field. Our program is able to solve thousands of eigenstates of a two-dimensional quantum system in reasonable time with commonly available hardware. Th... Title of program: itp2d Catalogue Id: AENR_v1_0 Nature of problem Numerical calculation of the lowest energy solutions (up to a few thousand, depending on available memory), of a single-particle, time-independent Schrödinger equation in two dimensions with or without a homogeneous magnetic field. Versions of this program held in the CPC repository in Mendeley Data AENR_v1_0; itp2d; 10.1016/j.cpc.2012.09.029