A constrained random-force model for weakly bending semiflexible polymers

Physics – Condensed Matter – Soft Condensed Matter

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4 pages, 1 figure, accepted for publication in PRE

Scientific paper

10.1103/PhysRevE.84.022801

The random-force (Larkin) model of a directed elastic string subject to quenched random forces in the transverse directions has been a paradigm in the statistical physics of disordered systems. In this brief note, we investigate a modified version of the above model where the total transverse force along the polymer contour and the related total torque, in each realization of disorder, vanish. We discuss the merits of adding these constraints and show that they leave the qualitative behavior in the strong stretching regime unchanged, but they reduce the effects of the random force by significant numerical prefactors. We also show that a transverse random force effectively makes the filament softer to compression by inducing undulations. We calculate the related linear compression coefficient in both the usual and the constrained random force model.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

A constrained random-force model for weakly bending semiflexible polymers 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 A constrained random-force model for weakly bending semiflexible polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A constrained random-force model for weakly bending semiflexible polymers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-479380

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.