Discretized model for difusion and drift of a chain in a square lattice

G. R TERRANOVA; H. O. MÁRTIN; C. M.ALDAO

Mar del Plata

Congreso; XV Conference on Nonequilibrium Statistical Mechanics and Nonlinear Physics; 2006

Universidad Nacional de Mar del Plata

(Presentación mural)The motion of a chain of N beads is studied to determine its diffusion coeficient in two dimensions. We present an extension of a recently introduced one-dimensional hard core repton model that represents the behavior of a linear and flexible polymer in a gel. The cases of noninteracting and self avoiding chains are considered. For both cases, an analytical expression for the diffusion coefficient is proposed for all N. The validity of this approximation is verified by means of Monte Carlo simulations.