End-to-end distance of linear polymers in two dimensions: a reassessment

Recent exact enumeration studies of the two-dimensional self-avoiding walk have produced evidence in support of non-analytic scaling corrections. Newly extended series for the triangular and square lattices (to N=19 and 25 respectively) are examined in the light of recent Monte Carlo results suggesting the absence of corrections of this type. Using a modified approach to series analysis, it is concluded that the end-to-end distance can best be understood in terms of analytic corrections alone; in view of the lack of theoretical support there is little reason to introduce additional kinds of correction in attempting to explain the data.