q-Moments remove the degeneracy associated with the inversion of the q-Fourier transform

TL;DR

This paper presents a method to uniquely invert the q-Fourier transform of probability densities by utilizing additional information from q-moments, overcoming previous non-invertibility issues for q > 1.

Contribution

It introduces a novel approach using q-moments to remove degeneracy in the inversion of the q-Fourier transform, expanding the transform's applicability.

Findings

q-Moments enable unique inversion of the q-Fourier transform.

The method overcomes previous degeneracy issues for q > 1.

Extra information from q-moments suffices for density determination.

Abstract

It was recently proven [Hilhorst, JSTAT, P10023 (2010)] that the q-generalization of the Fourier transform is not invertible in the full space of probability density functions for q > 1. It has also been recently shown that this complication disappears if we dispose of the q-Fourier transform not only of the function itself, but also of all of its shifts [Jauregui and Tsallis, Phys. Lett. A 375, 2085 (2011)]. Here we show that another road exists for completely removing the degeneracy associated with the inversion of the q-Fourier transform of a given probability density function. Indeed, it is possible to determine this density if we dispose of some extra information related to its q-moments.