Abstract
An electron moving faster than sound would emit phonons in the form of a narrow wake behind it, analogous to the Čerenkov radiation. Two electrons would, therefore, interact strongly when one lies in the wake of the other. Based on this idea a model for the superconducting state is suggested. The electron-lattice interaction, obtained by using the Bloch-Nordsieck transformation, is examined in the coordinate space, and the "wake" character of the interaction is shown. In the appendix, using a canonical transformation, the interaction between two electrons is calculated.

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