The Bare Diffusion Coefficient and the Peculiar Velocity Auto-Correlation Function

Details The Bare Diffusion Coefficient and the Peculiar Velocity Auto-Correlation Function The Bare Diffusion Coefficient and the Peculiar Velocity Auto-Correlation Function

2004-02-16

arxiv.org/abs/cond-mat/0402422v3

Physics

Condensed Matter

Statistical Mechanics

17 pages, 5 figures, 3 tables 18 pages, 5 figures, 3 tables, typos corrected, minor corrections, an additional appendix 2 comm

Scientific paper

The bare diffusion coefficient is given as the time integral of the peculiar velocity autocorrelation function or PVACF and this result is different from the well known Green-Kubo formula. The bare diffusion coefficient characterizes the diffusion process on a length scale lambda. The PVACF is given here for the first time in terms of the positions and velocities of the N particles of the system so the PVACF is in a form suitable for evaluation by molecular dynamics simulations. The computer simulations show that for the two dimensional hard disk system, the PVACF decays increasingly rapidly in time as lambda is reduced and this is probably a general characteristic.

Affiliated with

Also associated with

No associations

Rating

The Bare Diffusion Coefficient and the Peculiar Velocity Auto-Correlation Function does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Bare Diffusion Coefficient and the Peculiar Velocity Auto-Correlation Function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Bare Diffusion Coefficient and the Peculiar Velocity Auto-Correlation Function will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-680397