The time-step is an important variable in molecular dynamics simulations. It is usually of the order of femto () seconds for molecular simulations.
Multiple time steps
A well known multiple time step method is the reversible reference system propagator algorithm (RESPA):
- M. Tuckerman, B. J. Berne and G. J. Martyna "Reversible multiple time scale molecular dynamics", Journal of Chemical Physics 97 pp. 1990-2001 (1992)