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Stochastic harmonies: navigating Brownian paths through magnetic fields with Langevin approach

Publication Type : Journal

Publisher : Springer Science and Business Media LLC

Source : The European Physical Journal Plus

Url : https://doi.org/10.1140/epjp/s13360-024-05733-8

Campus : Coimbatore

School : School of Physical Sciences

Department : Physics

Year : 2024

Abstract : In this study, we explore a system where charged particles are subjected to a harmonic potential while immersed in a constant magnetic field, manifesting characteristics of Brownian motion. The influence of the magnetic field creates coupled equations along the axes orthogonal to the field direction. To address this complex problem, we employ the Langevin approach. By using this method, we derive expressions for the mean square displacement and mean square velocity in the absence of the harmonic potential. We then extend our analysis with the harmonic potential and calculated the variances of displacement and velocity, as well as the covariance. These analytical results are rigorously compared with numerical simulations to validate their accuracy. Furthermore, our analysis incorporates the Bohr-van Leeuwen theorem, providing a comprehensive understanding of the system’s behavior under these conditions.

Cite this Research Publication : S. Sanjay, S. Saravana Veni, Stochastic harmonies: navigating Brownian paths through magnetic fields with Langevin approach, The European Physical Journal Plus, Springer Science and Business Media LLC, 2024, https://doi.org/10.1140/epjp/s13360-024-05733-8

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