Nonspreading wave packets
Nonspreading wave packets
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DOI:
10.1119/1.18177
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发表时间:
1996-06
影响因子:
0.9
通讯作者:
C. Wong
中科院分区:
文献类型:
--
作者:
C. Wong
The spreading or nonspreading of wave packets in one‐dimensional linear and quadratic potentials can readily be determined by solving Ehrenfest’s equations. The results for quadratic potentials can be understood in simple intuitive terms by using quantum distribution functions in phase space which, like classical distributions, rotate clocklike in time once per motional cycle. For more complicated situations, such as potentials with quantum energy spacings which are integral multiples of a basic unit, much can be learned instead by studying the quantum recurrence of their time‐dependent wave functions or probability densities.