Dear PWSCF developers,<br> I have a quick question. If I use ultrasoft pseudopotential (USPP), is the stress correctly calculated? If I remember correctly, the stress is not correctly calculated with USPP in the old version of QE. Is it solved in the new version 4.1? If I turn on Hubbard U, there is another contribution to the internal stress tensor. Is that contribution correctly calculated if I use USPP?<br>
Thank you very much.<br><br>Hanghui Chen<br>Department of Physics<br>Yale University<br>