Time-dependent condensate formation in ultracold atoms with energy-dependent transport coefficients
arXiv:2407.14307 · doi:10.1103/PhysRevA.110.023305
Abstract
Time-dependent Bose-Einstein condensate (BEC) formation in ultracold atoms is investigated in a nonlinear diffusion model. For constant transport coefficients, the model has been solved analytically. Here, we extend it to include energy-dependent transport coeffcients and numerically solve the nonlinear equation. Our results are compared with the earlier analytical model for constant transport coeffcients, and with recent deep-quench data for K-39 at various scattering lengths. Some non-physical predictions from the constant-coefficient model are resolved using energy-dependent drift and diffusion.
10 pages, 7 figures; submitted to Phys. Rev. A