2-NUCLEON CORRELATIONS AND THE NUCLEON SPECTRAL-FUNCTION IN NUCLEAR-MATTER AT FINITE-TEMPERATURE - LOW-DENSITY REGION

被引：10
|
作者：
ALM, T
ROPKE, G
SCHNELL, A
STEIN, H
机构：
[1] Arbeitsgruppe der Max-Planck-Gesellschaft Theoretische Vielteilchenphysik an der Universitat Rostock, 18051 Rostock
来源：
PHYSICS LETTERS B | 1995年 / 346卷 / 3-4期
关键词：
D O I：
10.1016/0370-2693(94)01698-C
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The nucleon spectral function is calculated in low-density nuclear matter at finite temperature. Using Matsubara Green's functions the nucleon selfenergy is evaluated in the ladder approximation for the thermodynamic two-particle T-matrix. In addition to the contribution from the continuum part of the T-matrix special attention is paid to its pole contribution reflecting the two-particle bound state (deuteron) in the medium. The consequences of the formation of two-particle bound states for the selfenergy and the one-particle spectral function are shown.
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页码：233 / 239
页数：7
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