有限温度单ρ介子交换势  

One ρ-Meson Exchange Potential at Finite Temperature

作　　者：郑国桐 苏汝铿[1] 

机构地区：[1]杭州师范学院物理系,复旦大学物理系

出　　处：《高能物理与核物理》1994年第6期525-533,共9页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金

摘　　要：从温度场论虚时格林函数方法出发．推导了有限温度单ρ介子交换势，得出ρ介子随温度升高而变轻，这与利用ＱＣＤ标度性质得到的结果一致．还得出ρ介子与核子相互作用的耦合常数随温度变化的规律也和σ介子与核子的相似．By means of the imaginary-time Green function method in finite-temperature field theory,one ρ-meson exchange potential at finite temperature is obtained.It is found that ρ-meson become lighter in terms of temperature increasing.The result is in good agreement with that obtained from scalling property of QCD.It is also found that temperature dependence of ρ-meson coupling constants is similar to that of,σ-meson coupling constants.

关 键 词：温度场 Ρ介子 短程核力 耦合常数 

分 类 号：O571.25[理学—粒子物理与原子核物理]