[lammps-users] fix Langevin and zero mass

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1

Dear,

We know the inertial effects can be disregarded when doing Brownian dynamics simulation. ant then I want to ask whether I can set particles’ mass zero if I use fix langevin command in LAMMPS. if not, what’s the difference between MD with langevin thermostatting and Brownian dynamics in time scale and length scale.

Thanks in advance.

2

You can't set the mass of a particle to zero.

See the doc page on fix langevin and the fix_langevin.cpp file
for details of what it's doing.

Steve