Figure 3. Lowest two (n=1,2) PIB wavefunctions (dash-dotted lines) and their absolute squares (solid lines). The wavefunctions and their squares have been shifted vertically according to their energy

From

Visualizing the Origin of the Exchange Energy

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

World Journal of Chemical Education. 2023, 11(4), 141-148 doi:10.12691/wjce-11-4-3