Time Ordering and Counting Statistics

被引：0
作者：
S. Bachmann
G. M. Graf
G. B. Lesovik
机构：
[1] ETH Zürich,Theoretische Physik
[2] University of California at Davis,Department of Mathematics
[3] L.D. Landau Institute for Theoretical Physics RAS,undefined
来源：
Journal of Statistical Physics | 2010年 / 138卷
关键词：
Time ordering; Correlation functions; Counting statistics; Contact terms; Schwinger terms; Transport theory;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The basic quantum mechanical relation between fluctuations of transported charge and current correlators is discussed. It is found that, as a rule, the correlators are to be time-ordered in an unusual way. Instances where the difference with the conventional ordering matters are illustrated by means of a simple scattering model. We apply the results to resolve a discrepancy concerning the third cumulant of charge transport across a tunnel junction.
引用
收藏
页码：333 / 350
页数：17
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