<div dir="ltr"><br clear="all">Dear QE users,<br><br>I checked entire manual and keywords list of pw.x, there is nowhere information about manual entering of atomic velocities in the input file, If necessary sometimes. Moreover, I have seen dynamics_module.f90 file, it is shown that velocities are initialized from Maxwell-Boltzmann distribution or random number distribution or zero velocities. So, please make me understand,<br>how to give manually velocities at a particular time step. In the input file, I am giving atomic coordinates in the angstrom units. If there is an option to give velocities in the input file, please<br>tell me keywords information and what type of units I have to give for velocities (e.g. angstroms/rydberg, Bohrs/rydberg).<br><br>In addition, in the output file, there is only updated atomic coordinates and no updated velocities at each time step. Can you please give a comment of the bit of code along with where to insert those bit of code in the dynamics_module.f90 file or wherever in the code, by that I can improve to add or doing something on the code to print updated velocities at each time step. Please, any suggestions are necessary to me. I don't have much command on the code, at-least I can try my level best.<br><br>I anticipated thanks for suitable answers from well-wishers.<br><br> <br><div class="gmail_signature">venkataramana<br></div><div class="gmail_signature">PhD student<br></div><div class="gmail_signature">IIT Bombay<br></div>
</div>