  
  
Stat 
Members: 3658 Articles: 2'599'751 Articles rated: 2609
02 November 2024 

   

Article overview
 

Symmetry Relations for Trajectories of a Brownian Motor  R. Dean Astumian
;  Date: 
1 May 2007  Subject:  Statistical Mechanics (condmat.statmech); Soft Condensed Matter (condmat.soft)  Abstract:  A Brownian Motor is a nanoscale or molecular device that combines the effects
of thermal noise, spatial or temporal asymmetry, and directionless input energy
to drive directed motion. Because of the input energy, Brownian motors function
away from thermodynamic equilibrium and concepts such as linear response
theory, fluctuation dissipation relations, and detailed balance do not apply.
The {em generalized} fluctuationdissipation relation, however, states that
even under strongly thermodynamically nonequilibrium conditions the ratio of
the probability of a transition to the probability of the timereverse of that
transition is the exponent of the change in the internal energy of the system
due to the transition. Here, we derive an extension of the generalized
fluctuation dissipation theorem for a Brownian motor for the ratio between the
probability for the motor to take a forward step and the probability to take a
backward step.  Source:  arXiv, arxiv.0705.0138  Other source:  [GID 787442] pmid17929996  Services:  Forum  Review  PDF  Favorites 


No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

 


