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[ Last edited by erylingjet on 2008-12-20 at 20:23 ]
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Originally posted by yyx19840628 at 2008-12-20 20:27:
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Q: by someone
the representation of the orbital molecular HOMO normally is in two colors: eg., red and blue, ok?
What means the colors? Red = negative density? Blue = positive density?

A: by Jerome Kieffer  http://www.terre-adelie.org
It is the mathematical sign of the wavefunction at this place, either
positive or negative.

As only the density of probability of presence of electrons makes
physically senses an this density is the square (i.e. postitive) of the
wavefunction, no mater if Red/Blue is positive or negative, only the
variation of sign matters for interactions.

[ Last edited by sandf on 2008-12-20 at 22:36 ]
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