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arXiv · 1407.6191

Work fluctuations for a Brownian particle driven by a correlated external random force

Arnab Pal·Sanjib Sabhapandit
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Abstract

We have considered the underdamped motion of a Brownian particle in the presence of a correlated external random force. The force is modeled by an Ornstein-Uhlenbeck process. We investigate the fluctuations of the work done by the external force on the Brownian particle in a given time interval in the steady state. We calculate the large deviation functions as well as the complete asymptotic form of the probability density function of the performed work. We also discuss the symmetry properties of the large deviation functions for this system. Finally we perform numerical simulations and they are in a very good agreement with the analytic results.

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Arnab Pal, Sanjib Sabhapandit. 2014-07-23. Work fluctuations for a Brownian particle driven by a correlated external random force. https://doi.org/10.1103/physreve.90.052116

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