Single-step propagators for calculation of time evolution in quantum systems with arbitrary interactions
2016 (English)In: Computer Physics Communications, ISSN 0010-4655, E-ISSN 1879-2944, Vol. 202, 211-215 p.Article in journal (Refereed) PublishedText
We propose and develop a general method of numerical calculation of the wave function time evolution in a quantum system which is described by Hamiltonian of an arbitrary dimensionality and with arbitrary interactions. For this, we obtain a general n-order single-step propagator in closed-form, which could be used for the numerical solving of the problem with any prescribed accuracy. We demonstrate the applicability of the proposed approach by considering a quantum problem with non-separable time-dependent Hamiltonian: the propagation of an electron in focused electromagnetic field with vortex electric field component.
Place, publisher, year, edition, pages
2016. Vol. 202, 211-215 p.
Single-step propagators, Quantum physics, Wave function evolution
Computational Mathematics Other Physics Topics
IdentifiersURN: urn:nbn:se:umu:diva-120609DOI: 10.1016/j.cpc.2016.02.006ISI: 000373542000014OAI: oai:DiVA.org:umu-120609DiVA: diva2:951857