<br> Dear Gabriele,<br><br> Thanks a lot for your quick response.<br> <br> > First, why do you post you request within an existing thread that has nothing to do with your problem? <<br><br> Sorry, for this mistake. It was an oversight on my side.<br>
<br> > Where is the proof that the final symmetry is different from the initial one? <<br><br> Here goes more direct proof:<br><br> Initial symmetry : 48 Sym.Ops. (with inversion). <br> Final symmetry : 6 Sym.Ops. (no inversion). <br>
<br> > I think that you should not pay attention to differences of the order of 10^-9, <<br><br>If we compare the final & initial positions given in my previous email, then we can see that<br>the differences are quite large. These differences go away if we use <br>
Wentzcovitch Damped Dynamics, instead of BFGS. However, Damped Dynamics stops <br>without convergence (50 iterations completed, stopping). Since this dynamics converge very <br>slowly, I would like to know whether VC-RELAX with BFGS has the above capability of respecting the <br>
symmetry.<br><br>Thanks & regards,<br>Srijan K.<br>CCMT<br>Indian Institute of Science<br>India 560012 <br><br>