Competition between Bose Einstein Condensation and spin dynamics

Abstract

We study the impact of spin-exchange collisions on the dynamics of Bose-Einstein condensation, by rapidly cooling a chromium multi-component 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 manifest strong spin fluctuations.

5 pages, 4 figures

References in corpus (8)

• Bose-Einstein condensation of chromium
• Bose-Einstein Condensation of Erbium
• Quantum degenerate dipolar Fermi gas
• Critical Dynamics of Spontaneous Symmetry Breaking in a Homogeneous Bose gas
• Emergence of coherence in a uniform quasi-two-dimensional Bose gas
• All-Optical Production of Chromium Bose-Einstein Condensates
• A chromium dipolar Fermi sea
• Can a Bose gas be saturated?

Cited by in corpus (1)

• Cooling All External Degrees of Freedom of Optically Trapped Chromium Atoms Using Gray Molasses