Comment on "Non-Markovian harmonic oscillator across a magnetic field and time dependent force fields"

Abstract

In a recent paper Das et al. [J. Chem. Phys. 147, 164102 (2017)] proposed the Fokker-Planck equation (FPE) for the Brownian harmonic oscillator in the presence of magnetic field and the non-Markovian thermal bath, respectively. This system has been studied very recently by J. C. Hidalgo-Gonzalez and J. I. Jiménez-Aquino [Phys. Rev. E 100, 062102 (2019)] and the Fokker-Planck equation was derived using the characteristic function. It includes a few extra terms in the FPE and the authors conclude that their method is accurate compared to the calculation by Das et al.. Then we reexamine our calculation and which is present in this comment. The revised calculation shows that both the methods give the same result.