The so-called umklapp processes contribute to the thermal and electrical properties of solids. These are originated from the interaction between phonon-phonon and electron-phonon. In particular, the former comes from anharmonic terms. The effect of umklapp-processes in the superconductivity of high critical temperature is an open question that deserves a in-depth and detailed analysis.

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回复“关于高温超导的评论：压力对超导临界温度和库珀对分布函数的影响”

所谓的 umklapp 过程有助于固体的热和电特性。这些源于声子-声子和电子-声子之间的相互作用。特别是，前者来自非谐函数。umklapp 过程对高临界温度超导性的影响是一个悬而未决的问题，值得深入和详细分析。