Integrable nonautonomous nonlinear Schrödinger equations are equivalent to the standard autonomous equation.
A class of nonautonomous nonlinear Schrödinger equations, claiming to be novel integrable systems with rich properties, continues to appear in the literature. All such equations are shown to be not new, but equivalent to the standard autonomous equation, which trivially explains their integrability features.
Kundu
Anjan
A
Theory Group, Saha Institute of Nuclear Physics, & CAMCS, Calcutta, India. anjan.kundu@saha.ac.in