A general formula in closed form to obtain exact similarity solutions of the Fokker-Planck equation with both time-dependent drift and diffusion coefficients was recently presented by Lin and Ho [Ann. Phys.327, 386 (2012); Lin and Ho, J. Math. Phys.54, 041501 (2013)]. In this paper, we extend the class of exact solutions by exploiting certain properties of the general formula.
Journal of Mathematical Physics 55( 11), 113301(10 Pages)