dc.identifier.uri |
http://dx.doi.org/10.15488/13704 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/13814 |
|
dc.contributor.author |
Oppermann, F.
|
|
dc.contributor.author |
Eicke, N.
|
|
dc.contributor.author |
Lein, M.
|
|
dc.date.accessioned |
2023-05-17T05:17:14Z |
|
dc.date.available |
2023-05-17T05:17:14Z |
|
dc.date.issued |
2022 |
|
dc.identifier.citation |
Oppermann, F.; Eicke, N.; Lein, M.: Real-time propagator eigenstates. In: Journal of physics : B, Atomic, Molecular and Optical Physics 55 (2022), Nr. 19, 19LT01. DOI: https://doi.org/10.1088/1361-6455/ac8bb9 |
|
dc.description.abstract |
Obtaining a numerical solution of the time-dependent Schrödinger equation requires an initial state for the time evolution. If the system Hamiltonian can be split into a time-independent part and a time-dependent perturbation, the initial state is typically chosen as an eigenstate of the former. For propagation using approximate methods such as operator splitting, we show that both imaginary-time evolution and diagonalization of the time-independent Hamiltonian produce states that are not exactly stationary in absence of the perturbation. In order to avoid artifacts from these non-stationary initial states, we propose an iterative method for calculating eigenstates of the real-time propagator. We compare the performance of different initial states by simulating ionization of a model atom in a short laser pulse and we demonstrate that much lower noise levels can be achieved with the real-time propagator eigenstates. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Bristol : IOP Publ. |
|
dc.relation.ispartofseries |
Journal of physics : B, Atomic, Molecular and Optical Physics 55 (2022), Nr. 19 |
|
dc.rights |
CC BY 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0 |
|
dc.subject |
eigenstates |
eng |
dc.subject |
laser-induced ionization |
eng |
dc.subject |
split-operator method |
eng |
dc.subject |
time-dependent Schrödinger equation |
eng |
dc.subject |
time-independent Schrödinger equation |
eng |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
Real-time propagator eigenstates |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
1361-6455 |
|
dc.relation.issn |
0953-4075 |
|
dc.relation.doi |
https://doi.org/10.1088/1361-6455/ac8bb9 |
|
dc.bibliographicCitation.issue |
19 |
|
dc.bibliographicCitation.volume |
55 |
|
dc.bibliographicCitation.firstPage |
19LT01 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|