“…The ρ-representation or the ρn representation (|n| = 1) may also be used in a so-called generalized Schrödinger (GS) picture in which the analogs of the Schrödinger operators of a particle are independent of both the time and the space coordinates t, x in different representations [6]. The one-dimensional motion of a free particle in the ρ-representation is described by the equations ih ∂ ∂t ψ(ρ, t, x) = H(ρ)ψ(ρ, t, x), −ih ∂ ∂x ψ(ρ, t, x) = P (ρ)ψ(ρ, t, x), (3) where the Hamilton operator H(ρ) and the momentum operator P (ρ) have the form H(ρ) = mc 2 cosh(− ih mc ∂ ρ ), P (ρ) = mc sinh(− ih mc ∂ ρ ).…”