Electron-positron interaction in light elements represented by atoms embedded in an electron gas
| dc.creator | Stachowiak, H. | |
| dc.creator | Boronski, E. | |
| dc.date | 2004-02-18 | |
| dc.date.accessioned | 2026-07-07T02:56:33Z | |
| dc.date.available | 2026-07-07T02:56:33Z | |
| dc.description | Mijnarends et al. [J. Phys. Condens. Matter {\bf 10}, 10383 (1998)] contested the best existing calculations of positron annihilation rates in jellium and crystal lattices, pointing in this way at deficiencies of existing theories of electron-positron interaction in these materials. In the present work the local enhancement factors due to positron-electron interaction in Li, Be, B, C, N and O are computed in a consequent many-body approach for core and as concerns lithium also for conduction electrons and compared to the results of existing approximations to this problem which avoid direct many-body calculations in metals, i.e. the local density, generalized gradient and weighted density approximations, as well as to experimental data. Conclusions about positron lifetime and positron-electron correlation energy are also presented. Suggestions concerning annihilation rates in an electron gas agree with those of Mijnarends et al. | |
| dc.description | 8 pages, 7 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0402478 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0402478 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/23366 | |
| dc.subject | Soft Condensed Matter | |
| dc.title | Electron-positron interaction in light elements represented by atoms embedded in an electron gas | |
| dc.type | text |