A new procedure for calculating the frequency- and wave-vector-dependent dielectric response function is described. It is based on decoupling and solving the equations of motion for the Green's functions of the charge-density operators by a moment-conserving method which is discussed. By use of this method an expression for the dielectric function in the static limit (omega -> 0) is obtained; it depends on a function G(k), for which numerical values are calculated and tabulated. Evidence that the procedure described here leads to reliable values of G(k) for small, intermediate, and large values of k is presented.
Calculation of the dielectric function for a degenerate electron gas with interactions. I. Static limit
TOIGO, FLAVIO;
1970
Abstract
A new procedure for calculating the frequency- and wave-vector-dependent dielectric response function is described. It is based on decoupling and solving the equations of motion for the Green's functions of the charge-density operators by a moment-conserving method which is discussed. By use of this method an expression for the dielectric function in the static limit (omega -> 0) is obtained; it depends on a function G(k), for which numerical values are calculated and tabulated. Evidence that the procedure described here leads to reliable values of G(k) for small, intermediate, and large values of k is presented.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.