These programs are introduced in the paper: Lev Barash, Stefan Güttel, Itay Hen, Calculating Elements of Matrix Functions using Divided Differences, Computer Physics Communications 271, 108219 (2022).

The programs are licensed under a Creative Commons Attribution 4.0 International License: http://creativecommons.org/licenses/by/4.0/

tfim.cpp: calculates matrix elements of the exponential of the transverse-field Ising model Hamiltonian using divided differences

tfim_amplitudes.cpp: calculates quantum transition amplitudes for the transverse-field Ising model Hamiltonian using divided differences

tfim_mod2.cpp: calculates matrix elements of the exponential of the transverse-field Ising model Hamiltonian modulo two using divided differences

tfim_mod2_amplitudes.cpp: calculates quantum transition amplitudes for the transverse-field Ising model Hamitlonan modulo two using divided differences