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Frequency moments of the dielectric function for an inhomogeneous electron gas
| Content Provider | Scilit |
|---|---|
| Author | Taut, M. |
| Copyright Year | 1985 |
| Description | Journal: Journal of Physics C: Solid State Physics A unified treatment of the arbitrary frequency moments I_{qq}$^{(n)}$ of the longitudinal dielectric matrix epsilon$ _{qq'}$( omega ) and of the moments F_{qq}$^{(n)}$ of epsilon _{qq'}$^{-1}$( omega ) is given for the inhomogeneous electron gas. The I_{qq}$(^{n)}$ are in the RPA, whereas the F_{qq}$^{(n)}$ are exact in the non-relativistic limit excluding phonons. Furthermore, the author derives formulae allowing the F_{qq}$^{(n)}$ to be calculated from I_{qq}$^{(n)}$ and vice versa for a given approximation, which obeys the Kramers-Kronig relations. Using inequalities between the moments the author derives an inequality relating the static dielectric function of a non-conductor and the electron density at the nuclear sites. |
| Related Links | http://iopscience.iop.org/article/10.1088/0022-3719/18/13/014/pdf |
| Ending Page | 2690 |
| Page Count | 14 |
| Starting Page | 2677 |
| ISSN | 00223719 |
| DOI | 10.1088/0022-3719/18/13/014 |
| Journal | Journal of Physics C: Solid State Physics |
| Issue Number | 13 |
| Volume Number | 18 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1985-05-10 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics C: Solid State Physics Nuclear Physics Electron Density Kramers Kronig |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Condensed Matter Physics Engineering |
