Erik Lindahl
Erik Lindahl
Erik Lindahl
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van der Waals interactions<br />
• Atoms repel each other at close distance<br />
due to overlap of electrons (repulsion)<br />
• All atoms attrach each other at long<br />
distance due to induced dipole effects<br />
(dispersion)<br />
Example - Buckingham potential:<br />
V (r)=Aexp Br + C 6<br />
r 6<br />
Same problem as before:<br />
exp(r) is slow to calculate
![[VAR]=Notes on variational calculus](https://img.yumpu.com/35639168/1/190x245/varnotes-on-variational-calculus.jpg?quality=85)
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