Article ID Journal Published Year Pages File Type
9801978 Solid State Communications 2005 7 Pages PDF
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)
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