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We define the energy as a functional of the density
as
|
(145) |
where we are minimizing with respect to all the possible wavefunctions compatible with the density .
The ground-state can be found by minimizing the functional with respect to the density, subject to the constraint:
|
(146) |
where is the total number of electrons.
Subsections
Adrian E. Feiguin
2009-11-04