Figure 2. Correspondence between the signs in the singlet and triplet wavefunctions (eq. (4) and (5)) and the symmetry properties of the respective diagrams (for a description of these diagrams see Figure 4). The plus sign in the spatial part of the singlet wavefunction corresponds to a symmetric behavior of the respective diagram upon rotation around the diagonal. For the triplet state the minus sign corresponds to an anti-symmetric behavior

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Visualizing the Origin of the Exchange Energy

Surusch Djalali, Amitabh Banerji, Martin Kleinschmidt, Peter Gilch, Lena Halbrügge

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