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Work distribution function for a Brownian particle driven by a nonconservative force.

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Relation http://ir.cftri.com/12025/
http://dx.doi.org/10.1140/epjb/e2015-60179-1
 
Title Work distribution function for a Brownian particle driven
by a nonconservative force.
 
Creator Saha, Bappa
Sutapa, Mukherji
 
Subject 03 Physics
 
Description We derive the distribution function of work performed by a harmonic force acting on a uniformly
dragged Brownian particle subjected to a rotational torque. Following the Onsager and Machlup’s
functional integral approach, we obtain the transition probability of finding the Brownian particle at a
particular position at time t given that it started the journey from a specific location at an earlier time.
The difference between the forward and the time-reversed form of the generalized Onsager-Machlup’s
Lagrangian is identified as the rate of medium entropy production which further helps us develop the
stochastic thermodynamics formalism for our model. The probability distribution for the work done by the
harmonic trap is evaluated for an equilibrium initial condition. Although this distribution has a Gaussian
form, it is found that the distribution does not satisfy the conventional work fluctuation theorem.
 
Date 2015
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://ir.cftri.com/12025/1/The%20European%20Physical%20Journal%20B%20June%202015%2C%2088%20146.pdf
Saha, Bappa and Sutapa, Mukherji (2015) Work distribution function for a Brownian particle driven by a nonconservative force. The European Physical Journal B, 88 (146). pp. 131-10.