On 25 October 2012 02:38, Caloma Trumica <spmmal at gmail.com> wrote:
> Dear all, > > I do not understand why the two highlighted places in the attached DFPT > review paper are correct. > > I repeat my questions here: > > 1. Why the contributions from valence bands cancel each other? > If I remeber correctly, replace \Delta\psi from eq 28 in eq 23 > > 2. Why the left side of Eq.25 has a null eigenvalue? > > It may be better explained in Messiah "Quantum mechanics" book (1962), have you tried to have a look there? bests -- Dr. Lorenzo Paulatto IdR @ IMPMC -- CNRS & Universit? Paris 6 phone: +33 (0)1 44275 084 / skype: paulatz www: http://www-int.impmc.upmc.fr/~paulatto/ mail: 23-24/4?16 Bo?te courrier 115, 4 place Jussieu 75252 Paris C?dex 05 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pwscf.org/pipermail/pw_forum/attachments/20121026/26b99897/attachment.html
