Electronic interactions in quantum dots within the Keldsyh formalism

被引：0
|
作者：
Bevilacqua, Giuseppe [1 ]
Parravicini, Giuseppe Pastori [2 ,3 ]
机构：
[1] Univ Siena, CNISM, Via Roma 56, I-53100 Siena, Italy
[2] Univ Pavia, Dept Fis, I-27100 Pavia, Italy
[3] NEST CNR INFM, I-27100 Pavia, Italy
来源：
2009 INTERNATIONAL CONFERENCE ON EMERGING TRENDS IN ELECTRONIC AND PHOTONIC DEVICES AND SYSTEMS (ELECTRO-2009) | 2009年
关键词：
PERTURBATION EXPANSION;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Within the Keldysh formalism, we consider electron transport through single-level quantum dots, and revisit the proper self-energy diagram up to quadratic terms in the Coulomb interaction. Convolutions of Green's functions in real energy domain are analyzed in terms of retarded and advanced, lesser and greater, time-ordered and anti-time-ordered components. By virtue of the multipole expansion of the Fermi functions and other elaborations, we provide elegant and fully analytic expressions for the various components of the bubble diagram, with promise of deeper insight on the many-body effects in biased devices.
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页码：140 / +
页数：2
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