**From:** Ajasja Ljubetič (*ajasja.ljubetic_at_gmail.com*)

**Date:** Fri Apr 26 2013 - 15:21:56 CDT

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Dear all,

Are random forces applied at each step or at a fixed time interval (for

example every 1 ps) when using the langevin thermostat?

The reason for this question is as follows:

If I run a simulation with 0.1, 1 or 10 fs time-step, then the random

forces would be applied 10000 1000 or 100 times during one ps of

simulation. This might mean that the dynamics of the system (strongly?)

depends on the time-step, which intuitively should not be the case.

Thank you & best regards,

Ajasja

**Next message:**Huihui Liu: "Free energy calculation of proton transfer with FEP"**Previous message:**Francesco Pietra: "Re: metadynamics"**Next in thread:**Norman Geist: "AW: Are random forces applied at every step (when using the langevin thermostat) ?"**Reply:**Norman Geist: "AW: Are random forces applied at every step (when using the langevin thermostat) ?"**Reply:**Jérôme Hénin: "Re: Are random forces applied at every step (when using the langevin thermostat) ?"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ] [ attachment ]

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