Łuczka J
Institute of Physics, University of Silesia, 41-500 Chorzów, Poland.
Phys Rev E. 2021 Mar;103(3-2):036101. doi: 10.1103/PhysRevE.103.036101.
In a recent paper by B. G. da Costa et al. [Phys. Rev. E 102, 062105 (2020)2470-004510.1103/PhysRevE.102.062105], 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.
在B.G. 达科斯塔等人最近发表的一篇论文 [《物理评论E》102, 062105 (2020)2470 - 004510.1103/PhysRevE.102.062105] 中，研究了具有位置依赖粒子质量和位置依赖阻尼系数的非均匀介质的唯象朗之万方程及相应的福克 - 普朗克方程。本评论的目的是给出此类系统朗之万方程的微观推导。它与被评论论文中的推导并不等效。
