Vertex Corrections for Positive-Definite Spectral Functions of Simple Metals
نویسندگان
چکیده
منابع مشابه
Vertex Corrections for Positive-Definite Spectral Functions of Simple Metals.
We present a systematic study of vertex corrections in a homogeneous electron gas at metallic densities. The vertex diagrams are built using a recently proposed positive-definite diagrammatic expansion for the spectral function. The vertex function not only provides corrections to the well known plasmon and particle-hole scatterings, but also gives rise to new physical processes such as the gen...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2016
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.117.206402