2005/08/08 by Ronen Rapaport, Gang Chen, Steven H. Simon · 37 citations
Physics and Astronomy · #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Diffusion #Dipole #Dynamics (music) #Exciton #Nonlinear system #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum mechanics #Strong Light-Matter Interactions #cond-mat.other
paper · pdf · doi:10.1103/physrevb.73.033319
published in Physical Review B 73(3) (American Physical Society) · 5 pages, 4 figures
arxiv created 2005/08/08 · openalex publication_date 2006/01/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We use a simple model to describe the nonlinear dynamics of a dense two-dimensional dipolar exciton gas. The model predicts an initial fast expansion due to effective dipole pressure, followed by a much slower diffusion. The model is in very good agreement with recent experimental results. We show that the dipole-pressure-induced expansion strongly constrains the time available for achieving and observing Bose-Einstein quantum statistical effects, indicating a need for spatial exciton traps. We also suggest that nonlinear ballistic exciton transport due to the strong internal dipole pressure is readily achievable.