We study inhomogeneous states with local translation symmetry, described by the order parameter (OP) with local transformation properties k=k(X). It is shown that in the OP extended derivative we should consider compensating field which is equivalent to the distortion tensor. The definition of the phonon potential as a 4-distortion tensor is given and equations of motion of a particle in a phonon field are obtained. We construct the Ginzburg-Landau potential, which clearly describes the electron-phonon interaction and gives the correct definition of the quantum of magnetic flux without doubling the phenomenological charge interaction. The description of the states with the d-symmetry of the wave superconducting gap by the lowsymmetric solutions is suggested, in which the inversion of space-time is not equivalent to the OP complex conjugation. A comparative analysis of the nonlinear Landau theory with the compensating field distortion and the Kadić-Edelen linear gauge theory of dislocations is performed. It was demonstrated that the minimal interaction is a consequence of local wave properties of OP, which is consistent with the basic principles of quantum mechanics.
Minimal Interaction in the Local Landau Theory and Construction of the Phenomenological Ginzburg-Landau Potential in Terms of Electron-Phonon Interaction
Application of phenomenological Landau approach to the description of magnetic phase transitions in the ferromagnetic superconductor at ambient pressure
