strong-coupling approximation

Based on central field approximation and modified Keldysh Faisal Reiss ( KFR) theory, with the consideration of the effects of the residual ion on the final photoelectron, an expression of ATI differential probability of atoms in strong laser fields is obtained.

在中心场理论的基础上，利用改进的KFR方法，考虑到残留离子势对末态光电子的影响，推导出了原子在强激光场中超阈值电离微分跃迁几率的解析表达式。

In this paper the problem of strong unicity of best simultaneous approximation is studied.

研究了最佳同时逼近的强唯一性,给出了最佳同时逼近的强唯一性定理.

In this paper some strong limit theorems on the frequences of states and ordered state couples for the even-odd Markov chains fields on binary trees, including the estimates of the upper bound and lower bound of asymptotic entropy density and an approximation of Shannon-McMillan theorem, are obtained.

本文建立了二进树上奇偶马氏链场关于状态和状态序偶出现频率的若干强极限定理，其中包括渐近熵密度上、下界的一个估计式及Shannon-McMillan定理的一种逼近。