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Application of the G-JF discrete-time thermostat for fast and accurate molecular simulations

Author:
Gr?nbech-Jensen, Niels   Hayre, Natha Robert   Farago, Oded  


Journal:
Computer Physics Communications


Issue Date:
2014


Abstract(summary):

A new Langevin-Verlet thermostat that preserves the fluctuation-dissipation relationship for discrete time steps is applied to molecular modeling and tested against several popular suites (AMBER, GROMACS, LAMMPS) using a small molecule as an example that can be easily simulated by all three packages. Contrary to existing methods, the new thermostat exhibits no detectable changes in the sampling statistics as the time step is varied in the entire numerical stability range. The simple form of the method, which we express in the three common forms (Velocity-Explicit, Stormer-Verlet, and Leap-Frog), allows for easy implementation within existing molecular simulation packages to achieve faster and more accurate results with no cost in either computing time or programming complexity. [All rights reserved Elsevier].


Page:
524-527


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