We consider nonextensive systems that are related to the nonextensive entropy proposed by Tsallis and can be described by means of the nonlinear porous medium equation and the nonlinear Fokker-Planck equation proposed by Plastino and Plastino. We show how to determine the degree of nonextensivity of these systems from experimental data. Both transient and stationary cases are addressed. © 2004 Elsevier B.V. All rights reserved.
Frank, T. D., & Friedrich, R. (2005). Estimating the nonextensivity of systems from experimental data: A nonlinear diffusion equation approach. Physica A: Statistical Mechanics and Its Applications, 347, 65–76. https://doi.org/10.1016/j.physa.2004.08.031