Abstract
We present measurements of the temperature-dependent momentum distribution of a trapped Fermi gas consisting of in the BCS to Bose-Einstein condensation crossover regime. Accompanying theoretical results based upon a simple mean-field ground state are compared to the experimental data. Nonmonotonic effects associated with temperature arise from the competition between thermal broadening and a narrowing of the distribution induced by the decrease in the excitation gap with increasing .
- Received 20 April 2006
DOI:https://doi.org/10.1103/PhysRevA.74.011601
©2006 American Physical Society