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Joint Institute for High Temperatures of RAS, Izhorskaya, 13, build. 2, Moscow 125412, RussiaReceived 27 October 2011, revised 21 December 2011, accepted 22 December 2011Published online 27 February 2012Key words nonideal plasma, molecular dynamics, wave packet, strong field ionizationThe method of Wave Packet Molecular Dynamics Method (WPMD) is a promising replacement of the classicalmolecular dynamics for the simulations of many-electron systems including nonideal plasmas. In this contri-bution we report on a packet splitting technique where an electron is represented by multiple Gaussians, withmixing coefficients playing the role of additional dynamic variables. It provides larger flexibility and betteraccuracy than the original WPMD with a single Gaussian per electron. As a test case we consider ionization ofhydrogen atom in a short laser pulse, where the split packets provide a basis for quantum branching. |
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