PION PROPAGATION AT FINITE-TEMPERATURE

被引：64

作者：

SCHENK, A

机构：

[1] Institute for Theoretical Physics, University of Bern, CH-3012 Bern

来源：

PHYSICAL REVIEW D | 1993年 / 47卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.47.5138

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the pole shift of the pion up to second order in the density, considering the low-temperature expansion of the axial two-point function. To this order both absorptive and dispersive properties of pions are completely determined by two- and three-particle S-matrix elements. In particular, we show how the pole shift can be expressed in terms of these scattering amplitudes and discuss the size of corrections from three-particle collisions.

引用

页码：5138 / 5155

页数：18

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