Efficient method to calculate the Density of States

R. E. BELARDINELLI; V. D. PEREYRA

Mar del Plata (Argentina)

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

Medyfinol

In this poster an efficient method to calculate the density of state is introduced. The technique considers independent random walks in different restricted ranges of energy, and the resultant density of states is modified continuously by a function of time, F(t) a 1/t, for large time. As a consequence, the calculated density of state, g(E,t), approaches asymptotically to the exact value, gex(E), as a 1/t1/2, avoiding the saturation of the error. Comparisons with other similar methods as the well known Wang-Landau method (Phys. Rev. Lett. 86, 2050 (2001)) and n-Fold way method (Int. J. Mod. Phys. C 13, 477 (2002)) have been also made.