What is superpostability?

What is supergoing? The simplest explanation in the framework of quantum theory "
The book contains a summary of the new theory of superconductivity. This theory begins with the Farm Dirac function, which describes the distribution of electrons by their energies. Fermi Dirac function was obtained for electrons that do not interact with each other. A method is proposed that makes it possible with a density matrix to find the energy of the interaction of two electrons in the metal. It has been proven that the Coulomb interaction of electrons in the crystal lattice gives two terms. One term describes the attraction of electrons with equal wave vectors, which leads to the formation of electronic pairs. The other component speaks of the repulsion of electrons whose wave vectors are equal in size and opposite in the direction. This term leads to anisotropy in the distribution of electrons by wave vectors, which indicates the superconductivity of the substance. The resulting function explains all the properties of superconductors. The influence of the magnetic field on the superconductor is investigated. A formula for the density of the superconducting current density is obtained. Based on the stationary departments of Maxwell, the external magnetic field from the superconductor is explained. The effect of Maisner-Oxenfeld is proved. An explanation of the phenomenon of quantum levitation of superconductors has been found.
The book may be of interest to schoolchildren of senior classes, students of higher educational institutions, graduate students and teachers