Released momentum distribution of a Fermi gas in the BCS-BEC crossover

Details Released momentum distribution of a Fermi gas in the BCS-BEC crossover Released momentum distribution of a Fermi gas in the BCS-BEC crossover

2005-12-19

arxiv.org/abs/cond-mat/0512460v1

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.97.070404

We develop a time-dependent mean-field theory to investigate the released momentum distribution and the released energy of an ultracold Fermi gas in the BCS-BEC crossover after the scattering length has been set to zero by a fast magnetic-field ramp. For a homogeneous gas we analyze the non-equilibrium dynamics of the system as a function of the interaction strength and of the ramp speed. For a trapped gas the theoretical predictions are compared with experimental results.

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