Hedin's equations and enumeration of Feynman diagrams

被引：21
|
作者：
Molinari, LG
机构：
[1] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[2] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 11期
关键词：
D O I：
10.1103/PhysRevB.71.113102
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hedin's equations are solved perturbatively in zero dimension to count Feynman graphs for self-energy, polarization, propagator, effective potential and vertex function in a many-body theory of fermions with two-body interaction. Counting numbers are also obtained in the GW approximation.
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页数：3
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