Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5376562 | Chemical Physics | 2007 | 9 Pages |
Abstract
Langevin dynamics of one- and two-dimensional systems with the nearest neighbor couplings is examined to derive the autocorrelation function (ACF) of the distance fluctuations. Understanding of the dynamics of pairwise distance correlation is essential in the studies using single-molecule spectroscopy. For both 1-D cases of an open chain and a closed loop, a power law of tâ1/2, tâ3/2 and tâ5/2 for the ACF are obtained, and for 2-D systems of a sheet and a tube, a power law of tâ1, tâ2 and tâ3 are found. The different exponent of the power law is shown to depend on the location of the pairwise beads and their topography.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Wei-Chen Chen, Jau Tang,