Statistics of Charge Transport and Modified Time Ordering

被引：5
|
作者：
Beaud, V. [1 ]
Graf, G. M. [1 ]
Lebedev, A. V. [1 ]
Lesovik, G. B. [2 ]
机构：
[1] ETH, CH-8093 Zurich, Switzerland
[2] LD Landau Inst Theoret Phys RAS, Moscow 117940, Russia
来源：
JOURNAL OF STATISTICAL PHYSICS | 2013年 / 153卷 / 02期
基金：
瑞士国家科学基金会; 俄罗斯基础研究基金会;
关键词：
Time ordering; Correlation functions; Counting statistics; Contact terms; Transport theory; COUNTING STATISTICS; QUANTUM; NOISE;
D O I：
10.1007/s10955-013-0815-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The statistics of charge transport across a tunnel junction with energy-dependent scattering is investigated. A model with quadratic dispersion relation is discussed in general and, independently, in the two limiting cases of a large detector and of a linear dispersion relation. The measurement of charge takes place according to various protocols. It is found that, as a rule, the statistics is expressed by means of time-ordered current correlators. However the ordering prescription differs from the usual ones (Dyson and Keldysh) by the Matthews modification. Nevertheless binomial statistics is confirmed in all cases.
引用
收藏
页码：177 / 210
页数：34
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