SHORT-CHAIN BEHAVIOR OF STAR-BRANCHED NONREVERSAL RANDOM-WALKS EMBEDDED IN A TETRAHEDRAL LATTICE

Analytical results are presented for the mean-square dimensions of sta r-branched nonreversal random walk polymers on a tetrahedral lattice c onsidering short-chain effects and the influence of the core (centre) of the star. They are checked against numerical results obtained from highly precise Monte Carlo calculations. Short-chain effects are studi ed in detail. In addition, the deviation from proportionality between mean-square dimensions and the total chain-length is evaluated and com pared to that for self-avoiding chains and stars near theta-conditions , the total chain-lengths ranging from 125 to 3845 segments.