Statistics of Quenched Defects Containing Semi-Flexible Polymer Chain: Exact Results (II)

Pramod Kumar Mishra¹

Section:Research Paper, Product Type: Journal-Paper
Vol.7 , Issue.6 , pp.19-23, Dec-2019

CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v7i6.1923

Online published on Dec 31, 2019

Copyright © Pramod Kumar Mishra . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
We describe method to discuss thermodynamics of a defected semi-flexible homo-polymer chain in the two and three dimensions using fully directed self-avoiding walk lattice model. The defects are located along a line and these defects are not in the thermal equilibrium with the monomers of the semi-flexible polymer chain; i. e. we consider the case of defected semi-flexible polymer chain in the present manuscript for the case of quenched defects. There are m defects on the conformations of the N monomers long semi-flexible polymer chain and we exactly count the number of Q realizations of the defected conformations of N-monomers long self-avoiding semi-flexible polymer chain; and thus we derive the exact expression of the free energy of the defected semi-flexible polymer chain for the finite length (i. e. using the fixed particle ensemble method); and we also derive exact expression of the partition function for the defected self-avoiding semi-flexible polymer chain in the thermodynamic limit using the grand canonical ensemble theory. The method described in this manuscript may be easily extended to another case of the defected polymer chain for isotropic/directed walk lattice models.

Key-Words / Index Term :
Quenched defects, short chain, thermodynamic limit, conformational statistics

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