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In the variation method, we should realize that we do not seek the lowest E by varying the coefficients since we never take care of the second derivatives. Namely, we never know whether we obtained the maximum or minimum extreme points. What we can say is that we only obtained the stationary wave functions.
-
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48
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0344658819
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note
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This means that comparison of a partitioned energy (e.g. 'π energy') between different geometries is meaningless.
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