粒子与极化声子相互作用后恒定能级的位移

С. Tovstyuk
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引用次数: 0

摘要

对于能量不依赖于波矢量的粒子,研究了电子能级由于与极化声子的相互作用而发生的位移。我们还分析了电子-声子相互作用常数的取值和问题的其他参数对电子能量变化的影响。本文给出了用费曼图和双置换表示格林函数的方法。本文对相应的双置换列进行了分析,其解析表达式构成了链式分数表示的质量算子。我们得到了双置换声子分量可容许列和不可容许列的表达式。通过数值计算可以得出能量转移的结论,以及能量转移如何依赖于参数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The shift of the constant energy level after the interaction of particles with the polarizing phonons
The shift of the electron energy level due to its interaction with the polarizing phonons is investigated here for the particles whose energy does not depend on the wave vector. We also analyze the influence of the value of the constant of electron - phonon interaction and other parameters of the problem on the electron energy change. The methods of Green's functions, presented by the the Feynman diagrams and using the double permutations, are present here. The paper contains the analysis of the columns of the corresponding double permutations, the analytical expressions of which form the mass operator presented by the chain fractions. We received the expressions for admissibles and inadmissibles columns for phonon components of double permutations. The numerical calculations allow to conclude about the energy shift and how it depends on the parameters.
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