Comment on "Deformed Fokker-Planck equation: inhomogeneous medium with a position-dependent mass"
Statistical Mechanics
2021-03-26 v1
Abstract
In a recent paper by B. G. da Costa {\it et al.} [Phys. Rev. E 102, 062105(2020)], the phenomenological Langevin equation and the corresponding Fokker-Planck equation for an inhomogeneous medium with a position-dependent particle mass and position-dependent damping coefficient have been studied. The aim of this comment is to present a microscopic derivation of the Langevin equation for such a system. It is not equivalent to that in the commented paper.
Keywords
Cite
@article{arxiv.2102.00699,
title = {Comment on "Deformed Fokker-Planck equation: inhomogeneous medium with a position-dependent mass"},
author = {Jerzy Łuczka},
journal= {arXiv preprint arXiv:2102.00699},
year = {2021}
}