Langevin Dynamics

From wiki.gromacs.org

Velocity Langevin dynamics (or stochastic dynamics) adds a friction and a noise term to Newton's equations of motion.

[edit] Warning

Note that Langevin dynamics is not a magic option that allows the solvent to be replaced by a vacuum. Since it adds friction and noise it only influences the dynamics, not distributions. A high friction value may mimick the friction of water, however it does nothing to the potentials. Using Langevin dynamics without water is just a vacuum simulation.