Exactly solvable models and ultracold Fermi gases

Details Exactly solvable models and ultracold Fermi gases Exactly solvable models and ultracold Fermi gases

2010-11-14

arxiv.org/abs/1011.3259v1

J. Stat. Mech. (2010) P12014

Physics

Condensed Matter

Quantum Gases

based on an invited talk at Statphys24, Cairns (Australia) 2010. 16 pages, 6 figures

Scientific paper

Exactly solvable models of ultracold Fermi gases are reviewed via their thermodynamic Bethe Ansatz solution. Analytical and numerical results are obtained for the thermodynamics and ground state properties of two- and three-component one-dimensional attractive fermions with population imbalance. New results for the universal finite temperature corrections are given for the two-component model. For the three-component model, numerical solution of the dressed energy equations confirm that the analytical expressions for the critical fields and the resulting phase diagrams at zero temperature are highly accurate in the strong coupling regime. The results provide a precise description of the quantum phases and universal thermodynamics which are applicable to experiments with cold fermionic atoms confined to one-dimensional tubes.

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