On Tue, 2009-08-04 at 11:11 -0700, vtmtrinh at caltech.edu wrote: > Dear Lorenzo, > > Thank you for your help. I am still confused (I may be dump :-)). > Yes, I agree that wavefunction at Gamma is real and thus will have a sign > with it. However, |psi|^2 is a positive quantity. If we multiply |psi|^2 > by sign(psi) (which is segno in the code), then |psi|^2*sign(psi) will > have a sign of sign(psi). Why we want to have a sign with |psi|^2?
Perhaps, because you may then plot: sign(psi)\sqrt(|psi|^2) ... Regards, Tone -- Anton Kokalj J. Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia (tel: +386-1-477-3523 // fax:+386-1-477-3822) Please, if possible, avoid sending me Word or PowerPoint attachments. See: http://www.gnu.org/philosophy/no-word-attachments.html
