Simplicity and scaling - size of a real polymer in three (or any) dimensions

Details Simplicity and scaling - size of a real polymer in three (or any) dimensions Simplicity and scaling - size of a real polymer in three (or any) dimensions

2008-09-22

arxiv.org/abs/0809.3666v1

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 2 figures

Scientific paper

We examine the scaling of the linear dimension of the system size of a real polymer solution at constant excess free energy and in two different spacial dimensionalities, d=d0 and d=d1. Standard results for the functional form of the excess free energy lead to the conclusion that the scaling exponent nu(d) satisfies nu(d0) - nu(d1) = 1/d0 - 1/d1. Taking the critical dimensionality as a point of reference (nu(4)=1/2) gives a scaling exponent nu(d) = 1/4 +1/d, in agreement with the accepted result for two-dimensions (nu(2) = 3/4) and the first term in the epsilon (d-4) expansion. For the unsolved case of three dimensions it predicts nu(3)=7/12. Several simplifying features of this result are pointed out.

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