Negative friction of Darboux cosmological fluids

Atmospheric free fall with quadratic resistance when considered from the po int of view of the strictly isospectral construction of supersymmetric quan tum mechanics is a powerful analogy for the class of Darboux cosmological f luids that we introduced in a previous work. Here, using this analogy, it i s shown that the possible accelerating cosmological effects are due to the quadratic negative friction proper-ties with which the Darboux fluids are e ndowed through the mathematical construction.