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Tube Width Fluctuations in F-Actin Solutions

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arxiv 0910.5864 v3 pith:HCQE5OBZ submitted 2009-10-30 cond-mat.soft

Tube Width Fluctuations in F-Actin Solutions

classification cond-mat.soft
keywords tubewidthf-actinsolutionsagreementanalyticallyapproachapproximation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We determine the statistics of the local tube width in F-actin solutions, beyond the usually reported mean value. Our experimental observations are explained by a segment fluid theory based on the binary collision approximation (BCA). In this systematic generalization of the standard mean-field approach effective polymer segments interact via a potential representing the topological constraints. The analytically predicted universal tube width distribution with a stretched tail is in good agreement with the data.

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