Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9801978 | Solid State Communications | 2005 | 7 Pages |
Abstract
Photo-excited excitons are in the low-density regime approximately bosons. For low enough temperatures and high enough densities of the exciton gas, a non-equilibrium phase transition in the form of a Bose-Einstein condensation (BEC) can be expected. Various levels of the description of the kinetics of relaxation and condensation due to the coupling of the excitons to a cold reservoir of acoustic phonons. For non-interacting excitons a rate equation approach with the exciton Boltzmann equation can be used. This approach will be applied to investigate the possibility of a spontaneous condensation of quantum well micro-cavity polaritons. For interacting excitons the non-markovian quantum kinetics is required for the description of the BEC in order to incorporate the changes of the energy spectrum during the condensation self-consistently. Finally colored Langevin fluctuations can be used to calculate the phase diffusion of the condensate.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
H. Haug,