SELF-CONSISTENT SOLUTION OF THE 2ND-ORDER DYSON EQUATION FOR SINGLE-PARTICLE PROPAGATORS, WITH APPLICATION TO THE SPECTRAL FUNCTIONS OF CA-48

被引：36

作者：

VAN NECK, D ^{[1
]}

WAROQUIER, M ^{[1
]}

RYCKEBUSCH, J ^{[1
]}

机构：

[1] LAB THEORET PHYS, B-9000 GHENT, BELGIUM

来源：

NUCLEAR PHYSICS A | 1991年 / 530卷 / 02期

关键词：

D O I：

10.1016/0375-9474(91)90807-I

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present a new method to describe the fragmentation of single-particle strength in the framework of the Green function formalism. By means of an iterative scheme, we are able to construct a self-consistent solution of the Dyson equation up to second order in the interaction. Damping effects, such as the broadening of the spectral function for deep-lying hole states, show up in a natural way. We apply the formalism to a schematic model and to the case of the doubly-closed shell nucleus 48Ca.

引用

页码：347 / 369

页数：23

共 5 条

[1] PROTON HOLE STATES IN PB-208, STUDIED BY MEANS OF A SELF-CONSISTENT SOLUTION OF THE 2ND-ORDER DYSON EQUATION FOR SINGLE-PARTICLE PROPAGATORS
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[4] STUDY OF A NONLINEAR 2ND-ORDER DIFFERENTIAL-EQUATION OF THE ENERGY OF A SINGLE-PARTICLE IN A HELICOIDAL WIGGLER WITH INVARIANT GUIDING FIELD AND TRAVELING PLASMA-WAVE
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[5] Self-consistent solution of the Bogoliubov-de Gennes equation for a single vortex in f-wave superconductors:: Application to Sr2RuO4
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