A perturbative expansion of the evolution operator associated with time-dependent quantum Hamiltonians
Quantum Physics
2007-05-23 v1
Abstract
A novel expansion -- which generalizes Magnus expansion -- of the evolution operator associated with a (in general, time-dependent) perturbed Hamiltonian is introduced. It is shown that it has a wide range of possible solutions that can be fitted according to computational convenience. The time-independent and the adiabatic case are studied in detail.
Keywords
Cite
@article{arxiv.quant-ph/0404056,
title = {A perturbative expansion of the evolution operator associated with time-dependent quantum Hamiltonians},
author = {P. Aniello},
journal= {arXiv preprint arXiv:quant-ph/0404056},
year = {2007}
}
Comments
34 pages, no figures