Thermalization and Sub-Poissonian Density Fluctuations in a Degenerate Molecular Fermi Gas
Thermalization and Sub-Poissonian Density Fluctuations in a Degenerate Molecular Fermi Gas
We observe thermalization in the production of a degenerate Fermi gas of polar ^{40}K^{87}Rb molecules. By measuring the atom-dimer elastic scattering cross section near the Feshbach resonance, we show that Feshbach molecules rapidly reach thermal equilibrium with both parent atomic species. Equilibrium is essentially maintained through coherent transfer to the …