The use of excessively long timesteps in dissipative particle dynamics
simulations may produce simulation artifacts due to the generation of
configurations which are not representative of the desired canonical ensemble.
The configurational temperature, amongst other quantities, may be used to
assess the extent of the deviation from equilibrium. This paper presents
results for simulations of models of water, and lipid bilayer membranes, to
illustrate the nature of the problems.Comment: 13 pages, 7 figures, RevTex
