Abstract:
We introduce Euler–Darboux transformation for non-homogeneous differential equations with the right-hand side being a generalized function. As an example, we construct the fundamental solutions for Klein–Gordon–Fock and Schrödinger equations with variable coefficients describing a particle in external scalar field.
Keywords:Euler–Darboux transformation, Klein–Gordon–Fock equation, Schrödinger equation, fundamental solution.