A Statistical Interpretation of Space and Classical-Quantum duality
By defining a prepotential function for the stationary Schrödinger equation we derive an inversion formula for the space variable $x$ as a function of the wave-function $ψ$. The resulting equation is a Legendre transform that relates $x$, the prepotential ${\cal F}$, and the probability density. We invert the Schrödinger equation to a third-order differential equation for ${\cal F}$ and observe that the inversion procedure implies a $x$-$ψ$ duality. This phenomenon is related to a modular symmetry due to the superposition of the solutions of the Schrödinger equation. We propose that in quantum mechanics the space coordinate can be interpreted as a macroscopic variable of a statistical system with $\hbar$ playing the role of a scaling parameter. We show that the scaling property of the space coordinate with respect to $τ=\partial_ψ^2{\cal F}$ is determined by the ``beta-function''. We propose that the quantization of the inversion formula is a natural way to quantize geometry. The formalism is extended to higher dimensions and to the Klein-Gordon equation.