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Work distribution functions in polymer stretching experiments

Abhishek Dhar*

  • Raman Research Institute, Bangalore, 560080, India

  • *Electronic address: dabhi@rri.res.in
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Phys. Rev. E 71, 036126 – Published 22 March, 2005

DOI: https://doi.org/10.1103/PhysRevE.71.036126

Abstract

We compute the distribution of the work done in stretching a Gaussian polymer, made of N monomers, at a finite rate. For a one-dimensional polymer undergoing Rouse dynamics, the work distribution is a Gaussian and we explicitly compute the mean and width. The two cases where the polymer is stretched, either by constraining its end or by constraining the force on it, are examined. We discuss connections to Jarzynski’s equality and the fluctuation theorems.

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Phys. Rev. E 71, 036126– Published 22 March, 2005
  • Received 14 September 2004

© 2005 American Physical Society

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