Harmonically confined, semiflexible polymer in a channel: response to a stretching force and spatial distribution of the endpoints

Abstract

We consider an inextensible, semiflexible polymer or worm-like chain which is confined in the transverse direction by a parabolic potential and subject to a longitudinal force at the ends, so that the polymer is stretched out and backfolding is negligible. Simple analytic expressions for the partition function, valid in this regime, are obtained for chains of arbitrary length with a variety of boundary conditions at the ends. The spatial distribution of the end points or radial distribution function is also analyzed.

14 pages including figures

References in corpus (4)

• Fluctuations of a long, semiflexible polymer in a narrow channel
• Radial Distribution Function for Semiflexible Polymers Confined in Microchannels
• Longitudinal Response of Confined Semiflexible Polymers
• The effect of internal and global modes on the radial distribution function of confined semiflexible polymers