红外发散 meaning in English
infrared divergence
Examples
- For a particle in thermal bath , except for the logarithmic divergence in zero temperature , it also has a new infrared divergence ( linear divergence ) from finite temperature effect
当粒子处于热浴环境时，由于温度效应，除了零温时的对数发散外，它还会有新的红外发散（线性发散） 。 - By calculating the feynman diagram in rtf , we find that when taking into account both the thermal photon emission , absorption and the virtual photon exchange processes , the infrared divergences at zero and finite temperature can be cancelled at the same time . the full quantum calculation results for soft photon radiation coincide completely with the poisson distribution obtained in the semiclassical approximation ( the coupling of the classical current and quantized field )
通过实时温度场论下的费曼图计算，我们得到：将实光子的发射、吸收，虚光子的交换过程同时考虑时，零温场论中出现的和由温度效应引起的红外发散都能得到消除；并且完全量子场论下的软光子辐射几率与半经典近似下（经典的电流和量子化的电磁场之间的耦合）得到的泊松分布结果完全一致。