Coherent Scattering Function of the Reptation Model: Simulations Compared to Theory. Modelling, Analysis and Simulation (MAS)

摘要

We present results of Monte Carlo simulations measuring the coherent structure function of a chain moving through an ordered lattice of fixed topological obstacles. Our computer experiments use chains up to 320 beads and cover a large range of wave vectors and a time range exceeding the reptation time. For additional information we also measured the coherent structure function of internal pieces of the chain. We compare our results (i) to the predictions of the primitive chain model, (ii) to an approximate form resulting from Rouse motion in a coiled tube, and (iii) to our recent evaluation of the full reptation model.