
TY  - JOUR
A1  - Dobson, John F. 
A1  - Dinte, Bradley P. 
A1  - Wang, Jun 
A1  - Gould, Tim 
T1  - A Novel Constraint for the Simplified Description of Dispersion Forces
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 2001
VL  - 53
IS  - 4
SP  - 575
EP  - 596
KW  - 
UR  - https://doi.org/10.1071/PH00046 
N2  - We propose a novel use of an exact constraint in the construction of simple approximations for response functions of interacting many-electron systems. Within its simplest local version, the resulting theory gives improved approximations for static atomic dipolar polarisabilities without the direct use of wavefunctions or semi-empirical cutoffs. It leads to correct van der Waals energies between distant planar systems, but over-corrects existing cutoff theories for the van der Waals C 6 coefficient for atoms. It is argued that a nonlocal-response version of the constrained theory will do better. 
ER  -

