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cond-mat.other2005
Momentum distribution of a Fermi gas of atoms in the BCS-BEC crossover
C. A. Regal, M. Greiner, S. Giorgini +2
We observe dramatic changes in the atomic momentum distribution of a Fermi gas in the region of the BCS-BEC crossover. We study the shape of the momentum distribution and the kinet…
cond-mat.other2005
Macroscopic quantum tunnelling of Bose-Einstein condensates in a finite potential well
L. D. Carr, M. J. Holland, B. A. Malomed
Bose-Einstein condensates are studied in a potential of finite depth which supports both bound and quasi-bound states. This potential, which is harmonic for small radii and decays…
cond-mat.other2005
Quantum phase transitions in the Fermi-Bose Hubbard model
L. D. Carr, M. J. Holland
We propose a multi-band Fermi-Bose Hubbard model with on-site fermion-boson conversion and general filling factor in three dimensions. Such a Hamiltonian models an atomic Fermi gas…