Dear Bani Adam, http://en.wikipedia.org/wiki/Van_der_Waals_force
The "dispersion" / "London dispersion" is one of the components in the van der Waals force/interaction. The dispersion is what is usually most difficult to describe with the (semi-)local exchange-correlation functionals, but in the literature there is often confusion about the correct notation. Also the induction/Debye force is not fully described, if I understand correctly. Greetings, apsi -=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=- Ari P Seitsonen / Ari.P.Seitsonen at iki.fi / http://www.iki.fi/~apsi/ Physikalisch-Chemisches Institut der Universitaet Zuerich Tel: +41 44 63 54 497 / Mobile: +41 79 71 90 935 On Sun, 2 Sep 2012, bf azi wrote: > Hi Dear all > > What is difference between "London" and "van der Waals interactions"? > > > Bani Adam > Faculty of Science > Egypt > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum >