Les équations de la superconductivité

摘要: The equations defining the Bogolyubov-Valatin transformation are studied. They present an analogy with a problem in classical electrostatics. existence and uniqueness of solutions assured for case separable pairing force. In closed shells, coupling constant whose absolute value is less than certain critical value, solution coincides trivial solution, therefore it not possible to define system quasi-particles. (auth)