<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: style=" font-size:="" 12pt;="" color:="" #000000"=""><div><br>Dear Community,<br><br> I found some answer to my last question from Stefano Baroni’s lecture on DFPT and also practicing thermo_pw/examples/example04. <br>From the lecture I came to know only one atom is perturbed. From the practicing the example I came to know that symmetry comes into play to determine q-points. But there is another parameter, “q in the star”. Can you please let me know about this parameter?<br><br>Thank you,<br>Regards,<br>Krishnendu <br><br>----------------------------------------------------------------------------------------------------------<br><br>[QE-users] dynamical matrix and Bravais Lattice<br><br>Dear Community, <br><br><br><br><br>For calculating the dynamical matrix when displacements are applied to the I and Jth atoms, do those displacements depend on the Bravais Lattice of the input atomic structure? <br><br><br><br><br>Regards, <br><br>Krishnendu <br><br><br>-------------- next part --------------<br>An HTML attachment was scrubbed...<br>URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20230217/95694621/attachment.html><br></div><div data-marker="__SIG_PRE__"></div></div></body></html>