Model study of the Landau–Zener approximation
Model study of the Landau–Zener approximation
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朗道-齐纳近似的模型研究
DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
Nathan D. Aragon
中科院分区:
文献类型:
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作者:
S. Geltman;Nathan D. Aragon
We reexamine the accuracy of the Landau–Zener approximation, whose analytic simplicity has made it often cited and applied over the past 70years in describing nonadiabatic transitions. We find that this approximation may be in substantial disagreement with exact numerical results for a model physical system and a wide range of coupling strengths and relative velocities. We conclude that the Landau–Zener approximation should be used with caution for quantitative estimates of nonadiabatic transition probabilities or cross sections.