A physical limitation of the Wigner “distribution” function in molecular transport

A physical limitation of the Wigner “distribution” function in molecular transport
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分子运输中维格纳“分布”功能的物理限制

DOI:
10.1016/j.physleta.2012.03.054
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发表时间:
2012
期刊:
影响因子:
2.6
通讯作者:
H. Köppel
H. Köppel
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
I. Bâldea;H. Köppel

文献摘要

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我们给出了一个例子,揭示了维格纳“分布”函数的“动量“的符号不一定与真实的世界中的运动方向相关联。这一方面,这是不相关的维格纳函数的众所周知的限制,追溯到海森堡的不确定性原则,是特别相关的传输研究,其中它是有帮助的,以区分电子从电极流入设备,反之亦然。
We present an example revealing that the sign of the "momentum"of the Wigner "distribution" functionis not necessarily associated with the direction of motion in the real world. This aspect, which is not related to the well known limitation of the Wigner function that traces back to the Heisenberg's uncertainty principle, is particularly relevant in transport studies, wherein it is helpful to distinguish between electrons flowing from electrodes into devices and vice versa.