THE DELTA HOLE MODEL AT FINITE-TEMPERATURE

被引：22

作者：

HENNING, PA ^{[1
]}

UMEZAWA, H ^{[1
]}

机构：

[1] GSI DARMSTADT,D-64220 DARMSTADT,GERMANY

来源：

NUCLEAR PHYSICS A | 1994年 / 571卷 / 04期

关键词：

D O I：

10.1016/0375-9474(94)90713-7

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：

The spectral function of pions interacting with a gas of nucleons and DELTA33-resonances is investigated using the formalism of thermo field dynamics. After a discussion of the zero DELTA-width approximation at finite temperature, we perform calculations using a constant width as well as a more realistic parameterization. Apart from a full numerical calculation, we give analytical approximations to the pionic spectral function including a DELTA-width. The results are summarized in an effective dispersion relation for interacting pions.

引用

页码：617 / 644

页数：28

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