Electron-Electron Interactions in the Vacuum Polarization of Graphene
| dc.creator | Kotov, Valeri N. | |
| dc.creator | Uchoa, Bruno | |
| dc.creator | Neto, A. H. Castro | |
| dc.date | 2007-06-15 | |
| dc.date | 2008-06-04 | |
| dc.date.accessioned | 2026-07-07T09:50:47Z | |
| dc.date.available | 2026-07-07T09:50:47Z | |
| dc.description | We discuss the effect of electron-electron interactions on the static polarization properties of graphene beyond RPA. Divergent self-energy corrections are naturally absorbed into the renormalized coupling constant $α$. We find that the lowest order vertex correction, which is the first non-trivial correlation contribution, is finite, and about 30% of the RPA result at strong coupling $α\sim 1$. The vertex correction leads to further reduction of the effective charge. Finite contributions to dielectric screening are expected in all orders of perturbation theory. | |
| dc.description | 5 pages, 2 figures; published version | |
| dc.identifier | https://arxiv.org/abs/0706.2185 | |
| dc.identifier | http://arxiv.org/abs/0706.2185 | |
| dc.identifier | Physical Review B 78, 035119 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.78.035119 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/165062 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Electron-Electron Interactions in the Vacuum Polarization of Graphene | |
| dc.type | text |