Frequency‐dependent polarizabilities and van der Waals coefficients of half‐open‐shell systems in the time‐dependent coupled Hartree–Fock approximation

1990 ◽  
Vol 93 (5) ◽  
pp. 3389-3396 ◽  
Author(s):  
Hinne Hettema ◽  
Paul E. S. Wormer
1980 ◽  
Vol 41 (2) ◽  
pp. 409-420 ◽  
Author(s):  
Preben Albertsen ◽  
Poul Jørgensen ◽  
Danny L. Yeager

1992 ◽  
Vol 96 (4) ◽  
pp. 2978-2987 ◽  
Author(s):  
Martin Feyereisen ◽  
Jeff Nichols ◽  
Jens Oddershede ◽  
Jack Simons

A coupled Hartree-Fock approximation for describing the effects of time-dependent perturbations on many-electron systems is presented. It is applied to the calculation of the frequency-dependent refractive index of helium gas with results that differ by between 4 and 8% from the accurate values obtained by a refined variational calculation.


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