Bimodal distribution function of a three-dimensional wormlike chain with a fixed orientation of one end.
We study the distribution function of a three-dimensional wormlike chain with a fixed orientation of one chain end using the exact representation of the distribution function in terms of the Green's function of the quantum rigid rotator in a homogeneous external field. The transverse one-dimensional distribution function of the free chain end displays a bimodal shape in the intermediate range of chain lengths (1.3L{p},...,3.5L{p}). We also present analytical results for short and long chains, which are in complete agreement with the results of previous studies obtained using different methods.
Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle, Germany.
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Semeriyanov
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Stepanow