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arXiv · 2407.14307

Time-dependent condensate formation in ultracold atoms with energy-dependent transport coefficients

M. Larsson·G. Wolschin
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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.

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M. Larsson, G. Wolschin. 2024-07-19. Time-dependent condensate formation in ultracold atoms with energy-dependent transport coefficients. https://doi.org/10.1103/physreva.110.023305

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