The internal dynamics of a double quantum dot system is renormalized due to coupling respectively with transport electrodes and a dissipative heat bath. Their essential differences are identified unambiguously in the context of full counting statistics. The electrode coupling caused level detuning renormalization gives rise to a fast-to-slow transport mechanism, which is not resolved at all in the average current, but revealed uniquely by pronounced super-Poissonian shot noise and skewness. The heat bath coupling introduces an interdot coupling renormalization, which results in asymmetric Fano factor and an intriguing change of line shape in the skewness.
@article{arxiv.1103.0892,
title = {Full counting statistics of renormalized dynamics in open quantum transport system},
author = {JunYan Luo and Yu Shen and Xiao-Ling He and Xin-Qi Li and YiJing Yan},
journal= {arXiv preprint arXiv:1103.0892},
year = {2011}
}