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Updated: Jun 2, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Application of importance sampling to the computation of large deviations in nonequilibrium processes
Anupam Kundu1, Sanjib Sabhapandit, Abhishek Dhar
1Raman Research Institute, Bangalore 560080, India.
Abstract:
We present an algorithm for finding the probabilities of rare events in nonequilibrium processes. The algorithm consists of evolving the system with a modified dynamics for which the required event occurs more frequently. By keeping track of the relative weight of phase-space trajectories generated by the modified and the original dynamics one can obtain the required probabilities. The algorithm is tested on two model systems of steady-state particle and heat transport where we find a huge improvement from direct simulation methods.
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