[lammps-users] fluctuation of temperature in fix langevin

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1

Hello,

When I do langevin dynamic simulation with fix langevin command, I found the large deviation of temperature from target temperature, about 300/± 10. My system include a fixed rodlike polyelectrolyte , two mobile semiflexible polyelectrolytes and 600 ions.

I use fix nve and langevin command.
ANY suggestion? Thanks in advance.

2

What happens if you run it with no thermostat or some
other thermostat?

Steve