<div>Dear PWSCF users,</div>
<div> I have a question about the flag 'lsym' in the atomic projected DOS (projwfc.f90). The flag 'lsym' is set .true. by default. I ran it both with 'lsym' = .true. or .false. and found that if the Block state is nondegenerate, the decomposition into atomic orbitals is the same no matter whether 'lsym'=.true. or .false. However for those degenerate states, the coefficients are different. For example, if there are three degenerate Block states and 'lsym'=.true., the coefficients in the decomposition (i.e. modulous square of the overlap) are the same for these three states. If 'lsym' = false, the coefficients are different in the three states. </div>
<div> So why are the results different if 'lsym' = true and false? And which one is correct?</div>
<div> What is symmetrized projection?</div>
<div> Thank you in advance.</div>
<div> </div>
<div>Hanghui Chen</div>
<div>Department of Physics,</div>
<div>Yale University </div>