Casimir-Polder interaction between an excited atom and a gas dielectric medium
| dc.creator | Sherkunov, Yury | |
| dc.date | 2006-06-15 | |
| dc.date | 2006-10-09 | |
| dc.date.accessioned | 2026-07-07T07:38:53Z | |
| dc.date.available | 2026-07-07T07:38:53Z | |
| dc.description | The Casimir-Polder potential for interaction between an excited atom and a ground-state one in the retarded case obtained with the help of perturbation technique drops as R^-2 with the distance between the atoms [E.A. Power, T.Thirunamachandran, Phys. Rev. A, 47, 2539 (1993)]. It results in diverdent integrals for interaction between an excited atom and a dilute gas medium. We investigate interaction between two atoms embedded in a dielectric medium with the help of non-perturbative approach. We take into account absorption of photons in the medium. This approach solves the problem of divergence. We consider interaction between an excited atom and a planar dielectric gas medium of ground-state atoms. We show that the retarded interaction between an excited atom and a gas of ground-state atoms is not oscillating but follows a simple power law. We show that to obtain coventional non-retarded expression for the van der Waals force between an excited atom and a dilute gas the distance between the atom and the interface should be much smaller than the free mean pass of a photon in the medium. Interaction between an excited atom and a hemisphere of ground-state atoms is considered. | |
| dc.description | 23 pages, 6 figures | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0606135 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0606135 | |
| dc.identifier | PhysRevA 75, 012705 (2007) | |
| dc.identifier | doi:10.1103/PhysRevA.75.012705 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/121257 | |
| dc.subject | Quantum Physics | |
| dc.title | Casimir-Polder interaction between an excited atom and a gas dielectric medium | |
| dc.type | text |