期刊
JOURNAL OF CHEMICAL PHYSICS
卷 137, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4732306
关键词
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资金
- Minerva Foundation
- Israel Science Foundation (ISF) [807/08]
We propose a phase space method to propagate a quantum wavepacket driven by a strong external field. The method employs the periodic von Neumann basis with biorthogonal exchange recently introduced for the calculation of the energy eigenstates of time-independent quantum systems [A. Shimshovitz and D. J. Tannor, Phys. Rev. Lett. (in press) [e-print arXiv:1201.2299v1]]. While the individual elements in this basis set are time-independent, a small subset is chosen in a time-dependent manner to adapt to the evolution of the wavepacket in phase space. We demonstrate the accuracy and efficiency of the present propagation method by calculating the electronic wavepacket in a one-dimensional soft-core atom interacting with a superposition of an intense, few-cycle, near-infrared laser pulse and an attosecond extreme-ultraviolet laser pulse. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4732306]
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