SCATTERING FUNCTION FOR SEMIFLEXIBLE POLYMERS - DIRAC VERSUS KRATKY-POROD

Based on our earlier discovered analogy between Dirac's fermions and s emiflexible polymers [Ann. Phys. (NY) 202 (1990) 186] the static scatt ering function is calculated analytically for polymer chains of arbitr ary stiffness and length. The obtained results are in excellent agreem ent with the available Monte Carlo data for semiflexible chains. Based on this agreement, a new method of measuring the persistence lengths is proposed. Some implications of the obtained results for conformatio nal properties of semiflexible surfaces are also briefly discussed.