2016/07/08 by B. Naylor, Bruno Naylor, Mirosław Brewczyk +10 · 1 citation
Physics and Astronomy · #Bose gas #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensation #Condensed matter physics #Degrees of freedom (physics and chemistry) #Metastability #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Spin (aerodynamics) #Spinor #Strong Light-Matter Interactions #Thermalisation #Thermodynamics #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevlett.117.185302
published as Phys. Rev. Lett. 117, 185302 (2016) · 5 pages, 4 figures
arxiv created 2016/07/08 · openalex publication_date 2016/10/27 · arxiv updated 2016/11/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the impact of spin-exchange collisions on the dynamics of Bose-Einstein condensation by rapidly cooling a chromium multicomponent Bose gas. Despite relatively strong spin-dependent interactions, the critical temperature for Bose-Einstein condensation is reached before the spin degrees of freedom fully thermalize. The increase in density due to Bose-Einstein condensation then triggers spin dynamics, hampering the formation of condensates in spin-excited states. Small metastable spinor condensates are, nevertheless, produced, and they manifest in strong spin fluctuations.