The KdV in Cosmology: a useful tool or a distraction?
arXiv:1405.6436 · doi:10.1134/S0202289315020127
Abstract
The letter is a response to the recent article by J. Lidsey. We demonstrate that the Schwarzian derivative technique developed therein is but a consequence of linearizabiliy of the original cosmological equations. Furthermore, we show the required linearized equation to be nothing else but a Schrödinger equation.
6 pages. Acknowledgment is added