Resonant Processes and Exciton Propagation in a Frozen Gas
| dc.creator | Frasier, J. S. | |
| dc.creator | Celli, V. | |
| dc.date | 2000-08-30 | |
| dc.date | 2000-09-12 | |
| dc.date.accessioned | 2026-07-07T02:38:36Z | |
| dc.date.available | 2026-07-07T02:38:36Z | |
| dc.description | We present numerical simulations of a theory of resonant processes in a frozen gas of excited atoms interacting via dipole-dipole potentials that vary as $r^{-3}$, where $r$ is the interatomic separation. The simulations calculate time-dependent averages of transition amplitudes and transition probabilities for a single atom in a given state interacting resonantly with a uniformly distributed random gas of atoms in a different state. The averages are over spatial configurations of the gas atoms, which are held fixed while the resonant interaction creates a Frenkel exciton that can travel from atom to atom. We check that the simulations reproduce previously known exact results when the exciton is not allowed to propagate [Phys. Rev. A 59, 4358 (1999)]. Further, we develop an approximation for the average transition amplitude that compares well with the numerical results for a wide range of values of the system parameters. | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0008433 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0008433 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/16727 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.subject | Atomic Physics | |
| dc.title | Resonant Processes and Exciton Propagation in a Frozen Gas | |
| dc.type | text |