[QE-users] Center of mass motion when starting velocities are read from input

[Valentina Tozzini]

Hi everybody, 

This is a question about the code cp.x.

I’m running simulations with given starting velocities read from input. 

It seems to me that the system correctly assign velocities to atoms, but then subtracts the center of mass velocity to all components. 

Am I right? 

Is the CM motion subtracted at first (or maybe all) steps during simulation?

And if yes, is there a way to prevent it? 


Thank you. 






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