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- W4246152142 abstract "Abstract A wavepacket spreading under quadratic potentials is shown to have an exact classical analogue in the spreading of a classical ensemble taken from the Wigner distribution. The wavepacket motion under anharmonic potentials is complicated by greater spreading combined with additional interferences. Both are shown to be well handled by Heller’s frozen Gaussian swarm technique. Applications are outlined to spectral quantization and Franck–Condon transitions by Fourier analysis of the time correlation function. The chapter concludes with an introduction to the popular unitary Herman–Kluk coherent state propagation scheme. Advantages over semiclassical Van Vleck propagation are discussed, and a Filinov–based scheme for handling weakly chaotic systems is described." @default.
- W4246152142 created "2022-05-12" @default.
- W4246152142 creator A5011264315 @default.
- W4246152142 date "2014-08-21" @default.
- W4246152142 modified "2023-10-16" @default.
- W4246152142 title "Wavepackets" @default.
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