arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.5676cond-mat.mes-hall
收藏

维格纳“分布”函数在输运中的物理限制

A physical limitation of the Wigner "distribution" function in transport

Ioan Baldea, Horst Koppel

摘要:

我们提出了一个例子,揭示了“动量”$P$的维格纳“分布”功能$f(q, P)$的符号不一定与在现实世界中的运动方向。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原理,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。

英文摘要:

We present an example revealing that the sign of the "momentum" $P$ of the Wigner "distribution" function $f(q, P)$ is 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑