Abstract
An improved and simplified version of the string method in collective variables for computing minimum free energy paths is proposed. The string is discretized into a finite number of images and in the new method these images are evolved concurrently with replicas of the original system while keeping their inter-distances equal via reparametrization. There is no need to compute the mean force by time-averaging, nor to project the force perpendicularly to the string. In this Letter, the algorithmic aspects of the on-the-fly string method are presented in detail and the method is tested on the solvated alanine dipeptide molecule.
Original language | English (US) |
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Pages (from-to) | 182-190 |
Number of pages | 9 |
Journal | Chemical Physics Letters |
Volume | 446 |
Issue number | 1-3 |
DOIs | |
State | Published - Sep 26 2007 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry