ANSWERS AND QUESTIONS ON PATH INTEGRALS FOR SUPERCONDUCTIVITY IN A WEDGE

Some time ago, DeWitt-Morette¹ et al. discussed the problem of the propagation of radiation or particles in the presence of a wedge. Their treatment includes path integral solutions of the wedge problem with Dirichlet or Neumann boundary conditions for various situations. Recently, the superconducting phase in a wedge has gained increasing interest. The linearized Ginzburg-Landau equation for the order parameter is formally similar to the Schrödinger equation. But the conditions of no normal current at the boundary pose very specific problems, which are discussed in the present paper.