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Molecular dynamics in principal component space.

by: Servaas Michielssens, Titus S. van Erp, Carsten Kutzner, Arnout Ceulemans, Bert L. de Groot
The journal of physical chemistry. B In The Journal of Physical Chemistry B, Vol. 116, No. 29. (26 July 2012), pp. 8350-8354, doi:10.1021/jp209964a  Key: citeulike:10353261

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Abstract

A molecular dynamics algorithm in principal component space is presented. It is demonstrated that sampling can be improved without changing the ensemble by assigning masses to the principal components proportional to the inverse square root of the eigenvalues. The setup of the simulation requires no prior knowledge of the system; a short initial MD simulation to extract the eigenvectors and eigenvalues suffices. Independent measures indicated a 6-7 times faster sampling compared to a regular molecular dynamics simulation.


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