Fast algorithm to calculate density of states

BELARDINELLI R. E.; PEREYRA V. D.

PHYSICAL REVIEW E - STATISTICAL PHYSICS, PLASMAS, FLUIDS AND RELATED INTERDISCIPLINARY TOPICS

The American Physical Society

Año: 2007 p. 467011 - 467015

1063-651X

An algorithm to calculate the density of states, based on the well-known Wang-Landau method, is introduced. Independent random walks are performed in different restricted ranges of energy, and the resultant density of states is modified by a function of time, F
t
t−1, for large time. As a consequence, the calculated density of state, gm
E, t, approaches asymptotically the exact value gex
E as
t−1/2, avoiding the saturation of the error. It is also shown that the growth of the interface of the energy histogram belongs to the random deposition universality class.